Dust Mite Removal Service: How a Curtain and Carpet Showroom Lost a 5.2 Million Baht Hotel Project to the Samples Hanging on Its Own Walls

One thousand two hundred and forty curtain sample panels hanging undisturbed on a rail. Two hundred and fourteen fabric sample books opened dozens of times a day. Eighty-six carpet rolls stacked in a sealed air-conditioned store. And one pregnant customer who walked out of the showroom and into a hospital. This is the story of what accumulates in the most beautiful room on the street — and of the single dust mite removal service visit that turned every one of those numbers back around.

The Afternoon of 14 September 2025, on the Second Floor

At a quarter to three in the afternoon, inside the 480 square metre two-storey showroom of Decor House Textile Co., Ltd. on Pradit Manutham Road in the Lat Phrao district of Bangkok, sixty-four spotlights were trained on rows of curtain panels hanging the full length of the upper wall. The air conditioning was running at 24 degrees, as it did every day. The sliding glass doors were shut, as they were every day. And not a single window in the building had been opened since the fit-out was completed in 2022, because none of them open at all.

Pimchanok Areewong, thirty-one years old and twenty-seven weeks pregnant, came up to the second floor with her husband to choose curtains for a nursery. She had booked the appointment a week in advance and brought photographs of the room from every angle. The sales consultant walked her over to the linen and blackout section, which is the most densely hung zone in the showroom because it sits furthest from the entrance and gets almost no air movement at all.

Pimchanok did what every customer does. She ran her hand over the cloth, turned the panel to look at the reverse, and lifted the hem up close to her face to read the weave and, as buyers of fabric always do, to smell it. She repeated that with somewhere between fifteen and twenty different fabrics in the space of twenty minutes. The consultant standing beside her said it started as two or three sneezes and became a run of sneezing that would not let her finish a sentence. Both eyes reddened. Her nose began to stream. Then she said she felt light-headed and that her chest was tight.

Her husband sat her down on the nearest display sofa, a cream cotton three-seater that had been standing on that spot since the shop opened. Five minutes later, urticarial weals came up in patches across her throat and both upper arms. The team called a car and took her to a private hospital three kilometres away. She was given an antihistamine considered safe in pregnancy, monitored along with the foetal heart rate for two hours, and sent home with a note describing a hypersensitivity reaction to an environmental allergen.

That evening Natthaphong Wattanakosol, forty-four, the owner of a business his father started, sat in the back office and told his shop manager that he had been selling fabric for nineteen years and had never once imagined that the merchandise he hung up for customers to touch could send somebody to hospital.

Then the manager opened the front-of-house incident book and went back eight months, and what they found was not a coincidence. Between February and September 2025 there were 58 logged instances of a customer developing symptoms while inside the showroom. Most were sneezing runs, blocked noses and itchy eyes. On four occasions a customer asked to leave part-way through an appointment. On two occasions a customer phoned back to say that they had been awake all night with a blocked nose.

What Was Actually Accumulating in the Samples, the Carpet Store and the Display Sofas

A curtain and carpet showroom is one of the strangest indoor environments there is. It is a sealed room with fibre hanging on every wall, carpet covering every square metre of floor, rolled goods stacked in the dead corners, and air conditioning running twelve hours a day with no fresh air intake whatsoever. Most owners believe their showroom is clean, because the floor is vacuumed every morning, the glass is polished every day, and there is not one visible speck of dust anywhere in the building.

The problem is that visible cleanliness and accumulated allergen load are two entirely different measurements. In a fabric showroom the second number is a multiple of what you would find in an ordinary house, for one very simple reason: sample stock is never used and never washed. It just hangs there, month after month, in a place with no sunlight and no moving air.

One thousand two hundred and forty sample panels that had hung untouched for three years

The upper wall at Decor House carries 62 metres of sample rail. On that rail hang 1,240 curtain panels, each 40 centimetres wide and 150 centimetres long: blackout, sheer, linen, velvet, synthetic silk and acoustic cloth. Most of them went up together when the showroom opened in March 2022, and not one of them had ever come down to be cleaned.

Velvet and acoustic fabric are the two worst offenders. Both have a raised pile and a high fibre density, which means they capture airborne particles beautifully, exactly like a filter element — except that nobody ever takes them out and washes them the way you would an air conditioner filter. The lower hem of each panel, sitting roughly 30 centimetres above the floor, is the heaviest zone of all, because it catches everything that lifts off the carpet when people walk, and because it is the exact part that customers' hands reach for first.

Every time somebody pulls a panel out to look at it, or simply walks past quickly enough to create a draught, the particles resting on the surface of the cloth release into the air at a distance of less than forty centimetres from a human face. That is why symptoms in a showroom almost always begin while the customer is in the middle of choosing, rather than when they first walk through the door.

Two hundred and fourteen sample books, opened dozens of times a day

Across the five consultation tables and the shelving around the room there are 214 fabric sample books, each holding between 30 and 80 swatches stitched together at the spine. That is several tens of thousands of individual pieces of cloth in a single room. Sample books are the most handled object in any fabric showroom, because every customer opens them and runs a fingertip along the swatch edges to judge the hand of the material.

They are also the hardest thing in the building to clean. When a book is closed, the swatches press flat against each other in layers, creating narrow, dark, unventilated gaps that match every environmental preference a dust mite has. And every time a book is opened, whatever has accumulated between those layers is released all at once, at the closest possible range to somebody's face.

Eighty-six carpet rolls and 340 carpet sample tiles

The carpet store behind the ground floor is a 70 square metre air-conditioned room holding 86 rolls, some lying stacked on steel racking and some standing on end against the wall: short pile, long pile, hand-woven and acrylic. Long-pile carpet is the best moisture sponge and the best particle trap in the building, and the gaps between stacked rolls are dark, still and unventilated. The shop manager admitted that some rolls had been standing in that room since 2023 without ever being unrolled.

The ground floor also carries 340 carpet sample tiles, each 60 by 60 centimetres, hanging on twelve swing racks. Customers flip through them one at a time the way you flip through records, and many of them crouch or kneel down onto the floor carpet to judge the colour in real light — a posture that puts a face closer to the pile than anything else in the building.

Nine display sofas and the waiting bench nobody thinks about

The showroom keeps nine upholstered sofa and armchair groups staged around the floor so customers can see which curtain works with which furniture. Those sofas are sat on dozens of times a day, by customers waiting their turn, by customers going through drawings with the measuring technician, and by small children who arrive with their parents and reliably end up climbing on them or falling asleep on them. But because they are display merchandise rather than working furniture, nobody had ever scheduled a deep clean for them in three years.

The four waiting-bench cushions beside the reception counter, and the 26 decorative scatter cushions distributed around the staged corners, were in exactly the same condition: touched every day, never cleaned below the surface.

Air conditioning that runs all day and air that never gets replaced

What makes all of the above compound rather than simply add is the building's air strategy. The showroom was designed as a sealed glass box in order to control temperature and to stop sunlight fading the stock. Eleven split units run twelve hours a day, recirculating the same volume of air with no fresh air make-up at all. Relative humidity measured inside the carpet store during the 2025 rainy season ran between 72 and 79 percent, which is squarely inside the band where dust mite populations expand fastest.

Put those three things together — an enormous quantity of fibre, high humidity and air that is never replaced — and the result is the best-looking room on the street carrying an allergen load several times higher than an ordinary bedroom.

Why a Dust Mite Removal Service Matters More in a Fabric Showroom Than in a Home

Dust mites are arachnids rather than insects: eight legs, rounded bodies, milky white, and 0.1 to 0.3 millimetres long, which places them entirely beyond the naked eye even at arm's length. They live in damp, dark places and cling to fibre — mattresses, pillows, mosquito nets, curtains and upholstered furniture. In a curtain and carpet showroom you have to add hanging sample panels, tightly closed swatch books, rolled carpet in the stock room and staged sofas to that list.

Dust mites do not bite, and they are not disease vectors in the way that a mosquito is. The real problem is their droppings. Dust mite faecal particles carry proteins that act as potent allergens, and when a sensitised person inhales them or handles material loaded with them, the body mounts a hypersensitivity response. The recognised consequences are allergic rhinitis and general allergy, conjunctivitis, asthma, dermatitis and itchy rashes, and chronic headache.

Four things make a fabric showroom different from a house, and worse than most owners estimate.

The first is that customers do not look, they touch. Curtains and carpet are sold by hand feel. Nobody commits six figures to window treatments without running their fingers over the cloth first. The sales process therefore obliges the customer to make direct physical contact with the highest allergen concentration in the building, at the closest possible range, for the longest continuous stretch of their visit.

The second is that display stock is never washed. Curtains in a home get taken down and laundered once or twice a year. Carpet in a home gets vacuumed and periodically cleaned. Sample stock in a showroom goes up once and stays up until the range is discontinued, which can be three to five years. In practice it is fibre that accumulates without ever being allowed to stop accumulating.

The third is that staff live in it ten hours a day. A customer is there for an hour. A sales consultant breathes the same recirculated air from opening to closing, six days a week. A body under that kind of continuous allergen exposure moves by degrees from sneezing in the morning, to a blocked nose all day, to a formal diagnosis of chronic allergic rhinitis.

The fourth is smell. In a sealed room with dense fibre and high humidity, a stale odour builds up until it becomes the shop's own background smell — one that the people working there stopped noticing long ago. A customer walking in off the street registers it inside the first ten seconds. For a business that sells the feeling of a clean, expensive home, that smell can destroy a sale before anyone has said a word.

The World Health Organization treats indoor air quality as a genuine health determinant rather than a comfort issue, and Thailand's Department of Disease Control likewise identifies indoor allergens as a major driver of chronic respiratory complaints. For a retail space that admits dozens of members of the public a day, this stops being a question of housekeeping appearance and becomes a question of visitor safety.

The 128-Room Hotel Client Who Walked Out and Never Came Back

About sixty percent of Decor House revenue comes from project work rather than retail walk-ins. Project work means hotels, condominiums, serviced apartments and office buildings ordering curtains and carpet a hundred rooms and a thousand metres at a time. There are only a handful of such jobs in any year, each one is worth a great deal, and almost every one of them ends the same way: the client's working group travels to the showroom to inspect the physical samples before signing.

6 November 2025, the day the hotel team came to see the samples

The biggest opportunity of the year was a 128-room four-star hotel in Phuket refurbishing every guest room in the building. The scope covered double-layer curtains throughout, corridor carpet on every floor, guest room carpet and upholstered headboard panels. The quoted value was 5,200,000 baht. Decor House had spent seven months preparing: measuring on site, producing three-dimensional visuals, and sending fabric samples away for fire-resistance testing against the hotel's specification.

Five people came that day: the hotel general manager, the executive housekeeper, the project's interior architect, the purchasing manager, and a representative of the owner. They spent two hours and forty minutes in the showroom, most of it on the second floor in the blackout and acoustic sections — the same zone where Pimchanok had been standing in September.

Natthaphong says everything went well until roughly forty minutes after the group came upstairs. The executive housekeeper, who was handling more fabric than anybody else in the party, started sneezing and asked for tissues. Ten minutes later the interior architect began rubbing her eyes and asked, in front of the whole group, how often the sample stock was cleaned. Natthaphong answered honestly: the panels were vacuumed and dusted regularly, but they had never been taken down and washed, because the sample headers are stitched permanently onto the display rail.

Nobody said anything more about it that day. The group thanked him, photographed the shortlisted samples, and left.

The email of 23 November 2025

Seventeen days later, the hotel's purchasing department wrote to say that the project had selected a different supplier for the curtain and carpet package on this occasion. The reason given was phrased politely: the working group had concerns regarding the standard of maintenance and cleanliness of the textile materials, which was an important consideration for guest rooms that must accommodate visitors with allergic conditions.

The word dust mite does not appear anywhere in that email, and nobody referred directly to what had happened on 6 November. Natthaphong understood it immediately all the same. He later heard from a contact in the trade that the executive housekeeper had had a blocked nose for two days after the visit, and had been the most vocal objector in the review meeting.

For a showroom with fourteen employees, a 5,200,000 baht project going elsewhere is not just a line in a budget. It is the whole quarter's target, it is the sales team's year-end bonus, and it is a reference job that can no longer be put forward when bidding for the next hotel refurbishment.

The Real Cost: Health, Money and Reputation

What it cost the people who stand in it every day

Customers come in for an hour and go home. Staff are in the building from ten in the morning until eight at night, six days a week, and they are the ones who pay the highest price.

Manatsanan Siwirot, twenty-nine, a sales consultant who had been at Decor House for four years, started waking up with a blocked nose in her second year. By the third year she was carrying a nasal spray in her handbag at all times. In August 2025 she was formally diagnosed with chronic allergic rhinitis, and her doctor noted something telling: her symptoms improved markedly during a ten-day holiday, and returned to their previous severity within three days of going back to work.

Theeraphat Prasoetsri, thirty-five, the head measuring and installation technician, goes into the carpet store daily to pull rolls out for cutting. In October 2025 he was diagnosed with bronchial hyper-reactivity, with no previous history of asthma of any kind. Three more staff had an itchy forearm rash that recurred every month, and one of them told the shop manager that it was always at its worst on the days she had to reorganise the sample books.

Of fourteen employees, seven reported recurring respiratory or skin symptoms across 2025. That is half the team.

What it cost in money

When the shop manager put the ten-month figures on the meeting room table in December 2025, the room went quiet for a while.

Reputation, and the things that never appear in the accounts

What worried Natthaphong most was not the table. It was two things nobody can convert into baht.

The first was reviews and word of mouth. In October 2025 three two-star reviews appeared on the online map listing, and all three said the same thing: a stale smell in the shop, and sneezing while choosing fabric. The average rating fell from 4.7 to 4.2 in three months. For a business where most new customers arrive through a map search, that number translates directly into bodies through the door.

The second is that the project world is far smaller than outsiders assume. One interior architect may work on three or four schemes in a single year. Executive housekeepers within the same hotel group talk to each other constantly. And when one of them says that a particular showroom made them sneeze all day, that sentence travels further than any advertising the shop has ever paid for.

There was a third thing that Natthaphong did not raise in the meeting but said to his wife that night. Manatsanan — the best salesperson in the shop, top of the board three years running — had started talking about finding a job that did not mean standing in a room like that every day.

Why Every Conventional Fix the Showroom Tried Failed

Decor House did not sit still. Across 2025 they tried almost everything they could think of, and here is why each attempt failed.

Dusting the sample panels with a feather duster every morning. The opening staff had done this for three years, and it is the worst method on the list. A feather duster removes precisely nothing from the building. It simply flicks the particles that were lying still on the surface of the cloth up into the air, where they hang for an hour or two before settling back in the same places. Worse still, the shop did it at half past nine — thirty minutes before opening — which meant the first customers of the day walked into the room at the exact moment its airborne particle count was at its daily peak.

Bagged vacuum cleaners run over the carpet every day. The shop bought two machines at 9,800 baht each. They lifted grit and large fibre debris off the pile very effectively, and they discharged the finest particles out of the exhaust vent at the back of the unit at high velocity. The finest particles are exactly the dust mite faecal allergen. Staff walking behind the machine were inhaling a more concentrated dose than before they started.

Installing six air purifiers. The shop spent 168,000 baht including spare filters. Air purifiers genuinely help with particles already suspended in the room, and they made the numbers on the display panel look better. But they do not extract one milligram of allergen that is embedded inside the fibre of cloth and carpet. When a customer runs a hand over a panel, the release happens forty centimetres from her face — a distance a purifier standing in the corner of the room can never get to in time.

Air fresheners and a signature shop scent. The shop switched to reed diffusers and aerosol fresheners to cover the stale smell. The smell did genuinely disappear, for about two hours, and then returned mixed with the fragrance into something several customers described as more oppressive than the original. It reduced the allergen load by nothing at all.

Ordering 180 brand-new sample panels. The shop paid 243,000 baht to replace the panels in the most-handled zone. The trouble is that new panels hang in the same room, in the same air, at the same humidity, and get touched by the same hands. Within four months, customer symptoms in that zone were back to where they had been. This was the most expensive lesson of the year, because it proved that the problem was never any individual piece of cloth. The problem was the whole room.

Considering sending the sample curtains out to a laundry. Two specialist curtain cleaners quoted, and three problems arrived together. Many sample headers are stitched permanently onto the display rail, so removal means unpicking and re-sewing. Labour to take down and rehang 1,240 panels costs several times the cleaning itself. And while the fabric is away, the showroom becomes an empty room that cannot sell anything for one to two weeks.

Turning the air conditioning down. The manager had heard somewhere that dust mites dislike cold, so the showroom ran at 21 degrees for two months. The electricity bill rose by 9,400 baht a month, customers complained about the cold, and every symptom stayed exactly where it was — because allergen already embedded in fibre does not evaporate at a lower thermostat setting.

Every one of those measures shares a single flaw. They all treat the air or the surface, while the allergen causing the problem is buried deep in the fibre. Getting it out requires equipment built specifically for that job, together with a method that does not return to the room whatever it just lifted out.

The Answer: An On-Site Dust Mite Removal Service That Cleans Curtains While They Hang

In early January 2026 Natthaphong gave his manager three conditions. One: the sample curtains had to be cleaned without coming off the rail. Two: the carpet rolls, the display sofas and the sample books had to be done in the same visit. Three: it had to finish inside a two-day weekend, because the showroom could not stay shut any longer than that. Searching for a provider that could do all three, he found World Health Disinfection and called the same day.

World Health Disinfection Co., Ltd. is the first company in Thailand to combine dust mite removal with complete disinfection in a single service visit, covering mattresses, sofas, carpet and curtains. The work is done on site, and the part that matched the showroom's brief exactly is this: curtains are cleaned while they are still hanging. Nothing is taken down, nothing is unpicked, nothing is sent away. For 1,240 sample panels stitched permanently to their headers, that is not a saving — it is the difference between possible and impossible.

See the full dust mite removal service and pricing here. The same service is used by hotels, clinics, showrooms and office buildings across Bangkok and the surrounding provinces facing the same problem.

How the SIRENA System Dust Mite Machine Works

The centre of the service is the SIRENA System, designed and developed in Canada and driven by a 1200 watt cyclone motor built in Italy. What separates it from the bagged vacuum cleaners the showroom had been using is not suction power. It is the filtration principle.

Water filtration. Instead of holding debris in a bag that leaks fine particles out of the back of the machine, SIRENA draws everything straight down into a water filtration chamber. Dust, dirt, pet hair, skin flakes and dust mite droppings are trapped in water 100 percent, with no blow-back into the room at all. At the end of each area the technician empties the water in front of you. What came out of curtain samples that had been hanging for three years is, in Natthaphong's words, the thing that permanently changed his understanding of the word clean.

A HEPA filter down to 0.02 micron. Behind the water stage sits a HEPA element filtering to 0.02 micron. Together the two stages remove up to 99.99 percent of allergens, and also capture pollen, dust, dirt, VOC gases, staphylococcus, bacteria, germs, black mould, pet hair, dust mites, tobacco smoke and food odours held in fibre — a list that maps almost item for item onto what accumulates in a sealed showroom.

Certification you can actually show a client. The SIRENA System is certified by the Asthma Society of Canada and carries further marks including Quality Tested, Certified Space Technology, Certified Vacuums, Dust Mite Proof, Certified TÜV Rheinland, Certified Asthma and Allergy, Certified Go Green and Certified Eco Friendly. For a showroom that has to answer a hotel working group asking how it maintains its textile stock, that list carries considerably more weight than the sentence we vacuum every day.

It purifies the air while it works. Because the exhaust passes through water before it leaves the machine, the unit doubles as an air purifier and a scent diffuser during the job itself. A finished room smells clean from the first minute, rather than smelling of raised dust the way it does after a feather duster.

For heavily soiled items the team also brings MASTER VACUUM equipment to deep wash mattresses, sofas and carpet, lifting out stains, dirt and embedded dust that dry extraction alone cannot reach. More detail on the machine is available on the SIRENA System product page.

10 Reasons a Curtain and Carpet Showroom Should Use the WHD Dust Mite Removal Service

1. Sample curtains are cleaned without leaving the rail. This is the single most important point for a showroom. Panels stitched permanently to their headers are cleaned exactly where they hang, worked from the top edge down to the hem. Nothing is unpicked, nothing is re-sewn, and the showroom never becomes an empty room waiting for its stock to come back.

2. The team comes to you, so nothing leaves the shop. Eighty-six carpet rolls, nine display sofa groups and 214 sample books never go onto a truck. No transit risk, no additional insurance, and no merchandise missing from the sales floor.

3. Water filtration returns nothing to the room. Unlike the feather duster and the bagged vacuum the shop had been using, everything lifted out goes into water 100 percent and does not re-enter the air that staff and customers are breathing. In a sealed box with no fresh air make-up, this is the whole point.

4. It reaches into the fibre, not just across the surface. The real reservoir is deep inside velvet pile, down in carpet tufts and inside the foam beneath sofa upholstery — depths that dusting and surface vacuuming cannot reach at all.

5. Up to 99.99 percent of allergens removed. Backed by certification from the Asthma Society of Canada and a list of independent marks that a showroom can genuinely put in front of a project client's working group.

6. Disinfection is included in the same visit. WHD is the first company in Thailand to combine dust mite removal with complete disinfection in one service, and an additional disinfectant spraying service kills viruses, bacteria and mould in the same pass. In a space where dozens of strangers handle the same merchandise every day, that matters.

7. Mould in the stock room is handled at the same time. A carpet store with high humidity and no air movement cultivates dust mites and black mould simultaneously. The machine's filtration captures both in a single pass.

8. The stale smell genuinely disappears rather than being covered. Old fabric and sealed-room odour are extracted rather than sprayed over with fragrance. For a business selling the feeling of a clean, expensive home, the first ten seconds after a customer opens the door are worth more than most owners realise.

9. You see the evidence and can photograph it. The water is emptied in front of you every time it is changed. That is both a way of making a sales team believe in the product they are selling and a set of images the shop can use to explain its maintenance standard to a project client.

10. It costs a fraction of replacing sample stock. Set against 243,000 baht of new panels that begin re-accumulating in week one, and against a 5.2 million baht project already lost, booking a single service visit is not a decision that needs a long meeting.

The Two Days It Actually Took: 7 to 8 February 2026

A team of five arrived on the Saturday morning while the showroom was closed, and worked two full days in a sequence designed so that nothing already cleaned could be re-contaminated by the next stage of the job.

• Saturday 08:00, survey and baseline record. The technicians walked both floors, the carpet store, the sample book store, the staged sofa corners and the consultation area, measured humidity in the stock room and in the velvet zone, and photographed reference points before starting.
• Saturday 08:45, second floor curtain samples. All 1,240 panels were cleaned while hanging on their original rail, worked from the top edge down to the hem one panel at a time, without unhooking or unpicking a single one. The velvet and acoustic sections took the longest, because those are the densest weaves in the building.
• Saturday 13:20, rails, the wall behind the fabric, and the ceiling line. With the cloth done, the team cleaned the steel rail, the wall surface behind the panels that nobody had ever reached, the ceiling edge and the air conditioning grilles in the same zone — the source that re-soils the fabric within weeks if it is left alone.
• Saturday 16:00, 214 fabric sample books. Each book was opened out and both faces of every swatch section cleaned, along with the spine and the shelving. This was the most painstaking work of the two days.
• Sunday 08:00, the carpet store and its 86 rolls. Rolls were unrolled one at a time so the outer face and the folded edges could be cleaned, then the racking, the floor beneath it and the walls. Across the two days the machine water was changed 31 times.
• Sunday 11:30, 340 sample tiles and the floor carpet. Tiles on the twelve swing racks were done individually on both faces, and the fitted floor carpet on both levels was deep washed with MASTER VACUUM to lift three years of embedded traffic soiling.
• Sunday 14:00, nine display sofas, 26 cushions and the waiting bench. Faces, seat crevices, undersides and the backs of the backrests. The three heaviest groups, all of them nearest the entrance, were given an additional deep wash.
• Sunday 16:30, disinfectant spraying and handover. The team sprayed disinfectant across everything that had been cleaned and handed over WELLGIENIC disinfectant wet wipes, which kill 99.99 percent of germs and bacteria including COVID-19, and CHEMGENE HLD4H disinfectant spray, which kills viruses, fungi, bacteria, salmonella, mycobacteria, H1N1, COVID-19, pertussis, norovirus and influenza within 1 minute at 99.85 percent efficacy and protects for up to 14 days, tested by the Department of Microbiology and Immunology.

On Monday 9 February 2026 the showroom opened as normal. Not one trading day was lost, and the first thing the opening staff said to each other as they walked in was that the shop did not smell the same any more.

Before and After the Dust Mite Removal Service

In the Owner's Own Words

I have been selling fabric for nineteen years and I believed the whole time that my shop was clean, because the floor was vacuumed every morning, the glass was polished, and there was not one speck of dust anywhere you looked. What made me understand was the water in the machine. They emptied it in front of me thirty-one times over two days, and what came out of the curtain I had handed to a woman seven months pregnant in September is something I will not forget. I do not think of this as a cleaning cost any more. I think of it as the cost of selling a product that customers have to touch. We budget for it twice a year now, once before the rainy season and once before project season, and I tell every project client about it, because none of my competitors are doing it yet.

— Natthaphong Wattanakosol, owner, Decor House Textile Co., Ltd., Pradit Manutham Road, Lat Phrao, Bangkok

How to Hold the Result for as Long as Possible

A professional dust mite removal service resets the whole showroom. Holding that condition afterwards is a matter of daily routine, and these are the six things Decor House changed.

• Stop using a feather duster on the panels, permanently. Extraction instead of agitation is the single change that improves indoor air fastest at almost no cost, and it should happen at least an hour before opening rather than thirty minutes.
• Bring fresh air into the building every morning. Open the rear door and run the extract fan for at least thirty minutes before the air conditioning goes on. Air recirculating inside a sealed glass box all day is the main condition that makes everything accumulate faster.
• Keep the carpet store below 60 percent relative humidity. Fit a visible hygrometer and run a dehumidifier through the rainy season, because the stock room is always the worst room in the building and always the most overlooked.
• Rotate sample panel positions every quarter. Move panels out of the deadest air into the circulation zone, so that no piece of cloth spends three unbroken years in the same still corner.
• Retire the oldest sample books annually. The most-opened books degrade fastest, and they are the closest contact point to a customer's face anywhere in the shop.
• Put the deep service into the annual budget. A showroom with public footfall every day should be done once or twice a year, and the visit should always be scheduled to finish before project clients are booked in to inspect samples.

Read more on indoor allergens in the World Health Disinfection article library, see indoor air quality guidance from the World Health Organization and advice on allergy and respiratory disease from Thailand's Department of Disease Control. For the full scope of work, see the dust mite removal and disinfection service page, or start at the World Health Disinfection home page.

Do Not Lose the Next Client to Something Nobody Can See

Hanging curtain samples, fabric sample books, rolled carpet in stock, fitted floor carpet, display sofas and display mattresses — cleaned on site with complete disinfection, by the first company in Thailand to combine the two.

See the service and pricing, click here

Call 065-556-6294 | LINE @whd268

World Health Disinfection Co., Ltd. — 88 268 Kalpapruek Road, Bang Khae, Bangkok 10160

Frequently Asked Questions

Can sample curtains stitched permanently to the display rail really be cleaned in place?

Yes, and it is the centre of this service. The team cleans curtains while they are still hanging on their original rail, working from the top edge down to the hem one panel at a time. Nothing is unpicked, nothing is unhooked, and nothing has to be re-sewn. It suits showrooms, hotels, office buildings and any premises where taking curtains down costs more in labour and downtime than the cleaning itself.

How long does a 480 square metre showroom take?

It depends on the actual volume of work. At Decor House — 1,240 curtain sample panels, 214 sample books, 86 carpet rolls, 340 sample tiles, nine display sofa groups and fitted carpet on two floors — it took a team of five two full days over a weekend, so no trading day was lost. The team always surveys the site and estimates the schedule before a date is booked.

Does the shop have to close, and will the merchandise be damaged?

Most shops choose a closed day or outside trading hours so customers are not disturbed. No merchandise has to be moved off the sales floor, and because the system extracts into water there is no airborne dust settling onto fabric or carpet that has already been cleaned. The team always works from the upper floor down and from the cleanest zone to the dirtiest.

Can unsold carpet rolls in the stock room be cleaned?

Yes. Rolls are unrolled one at a time so the outer face and the folded edges can be cleaned, and then the racking, the floor beneath it and the walls are done as well, since those are what re-soil the rolls. Carpet with embedded soiling is deep washed with MASTER VACUUM equipment.

Is it safe for pregnant customers, small children and allergy sufferers?

Yes. Because filtration passes through water first and then a HEPA element down to 0.02 micron, no dust or allergen is discharged back into the room while the work is in progress. That is the opposite of a feather duster or a bagged vacuum, both of which can worsen symptoms immediately. Once the work is finished the space is ready to receive customers as normal.

How often should a showroom book a dust mite removal service?

For a sealed, air-conditioned showroom with visitors handling merchandise every day, once or twice a year is the recommendation. Schedule it ahead of the rainy season when humidity peaks, and ahead of the period when project clients are booked in to inspect samples. For an ordinary home, once or twice a year is likewise appropriate.

What is included free after the service?

Customers receive WELLGIENIC disinfectant wet wipes, which kill 99.99 percent of germs and bacteria including COVID-19, and CHEMGENE HLD4H disinfectant spray, which kills viruses, fungi, bacteria, salmonella, mycobacteria, H1N1, COVID-19, pertussis, norovirus and influenza within 1 minute at 99.85 percent efficacy and protects for up to 14 days, as tested by the Department of Microbiology and Immunology.