A Story From the Field: A Pharmacist and a Dentist in the Same Building

Pharmacist Wanna runs a community pharmacy in a shophouse in the old market district of Nakhon Sawan town, not far from where the Ping and Nan rivers meet to form the Chao Phraya. Upstairs, in the same building, Dr. Thanakorn has rented space for his dental clinic for several years. In late September 2026, the rivers rose until water backed up into the streets and storm drains. The ground-floor pharmacy flooded to about ankle height, and the water stayed for several days.

When it receded, Wanna and her staff reopened the doors to find a thin layer of mud across the floor and under the shelving. Boxes of medicine on the bottom shelves were soaked, their cardboard soft and warped. The refrigerator for vaccines and temperature-sensitive medicines had lost power during the outage. The stock room at the back had a distinct damp, musty smell. Upstairs, Dr. Thanakorn found that the water had not reached his clinic, but humidity rising from the ground floor and the stairwell had left the waiting room smelling stale, and the drain in his treatment room was giving off a sewer odor.

Both of them knew that theirs were not ordinary businesses. The people who walk through their doors are patients: older people, small children and people whose immune systems may already be weakened. Over coffee in the damp stairwell, they asked each other the same question. "How do we get the pharmacy and the clinic back to a level of cleanliness that patients can genuinely trust, and how do we explain that to them?"

Across Nakhon Sawan this month, many health businesses are asking the same thing: community pharmacies, medical clinics, dental practices, physiotherapy rooms, optical shops and small laboratories. They share a responsibility that goes beyond appearance. Their premises must be safe for people who are already unwell. And because patients often arrive with exactly the conditions floods tend to cause, from stomach upsets to infected cuts and itchy skin, these businesses need to reopen quickly as well as safely. Getting both right at the same time is the real challenge.

Why Pharmacies and Dental Clinics Need a Higher Standard After a Flood

1. Your customers are vulnerable

Most people entering a pharmacy are either ill or caring for someone who is. Dental patients sit with their mouths open in an environment where water spray is used and instruments touch mucous membranes directly. If the surroundings still harbor floodwater germs or airborne mold spores, these groups face a higher risk than the general public.

2. Floodwater germs in places that must be cleanest

Urban floodwater that has passed through streets and drains may carry bacteria such as E. coli and Leptospira, the organism that causes leptospirosis. These germs can remain on floors, shelf legs, the lower parts of counters and tile grout, all places that are hard to clean thoroughly by hand.

3. Mold in drug storerooms and supply rooms

Stock rooms for medicines and dental supplies are usually closed spaces filled with cardboard boxes. When humidity stays high, mold grows on boxes, wooden shelving and walls. Airborne spores are simply not acceptable in an area where medical products are stored.

4. Trust is everything

Pharmacies and clinics depend on trust. If patients smell damp or see water stains, they will immediately wonder about the cleanliness of the medicines and instruments too. A systematic, explainable recovery is as important to the business as the care itself.

5. Staff health and continuity of service

Pharmacists, dental assistants and clinic staff spend long hours in these rooms. Exposure to mold and lingering contamination can lead to respiratory symptoms and sick days at precisely the moment when the community needs their services most. Protecting the team is part of protecting patients.

An Essential Point: Flood-Exposed Medicines Must Not Be Returned to Sale

Before discussing disinfection, it must be stated clearly. Medicines and medical supplies that came into contact with floodwater, and temperature-controlled products whose refrigerator was off for longer than allowed, should be separated and handled according to public health authority guidance. They should not be sold or used on patients. Disinfection fogging and ozone treatment are for restoring the premises, the shelving and the air. They are not a way to rescue damaged medicines. If you are unsure whether a product is affected, treat it as affected and seek guidance, rather than risking a patient's health.

In the same way, dental instruments used on patients must continue to go through cleaning and sterilization according to normal professional standards. Disinfecting the premises supports a clean environment around the instruments. It does not replace that process.

We emphasize this because responsible recovery protects both patients and the professionals who serve them. A good disinfection provider should help you draw these lines clearly, not blur them.

General Cleaning Methods That Fall Short for Healthcare Premises

Mopping with bleach alone. Bleach works on some surfaces, but the strong chlorine smell is unsuitable for premises serving patients with respiratory illnesses. It can also corrode metal shelving and counters, and it does nothing for the air or high corners.

Wiping only where you can see stains. Germs are not confined to visible marks. The areas around them, under shelves, behind cabinets and inside AC vents, may also be contaminated.

Fragrance or odor blocks. Strong scents in a pharmacy or clinic can trigger reactions in sensitive patients, and they do nothing about mold spores in the stock room.

Switching the AC straight back on. Without cleaning, this simply blows spores and dust from the flood period around the waiting room and treatment rooms.

These methods are not wrong in themselves, but on their own they do not reach the standard that healthcare premises should meet after a flood.

Why Nakhon Sawan Needs to Take This Seriously

Mueang Nakhon Sawan sits at the confluence of the Ping and Nan rivers, the place known as Pak Nam Pho, where the Chao Phraya begins. When run-off from the north arrives at the end of the rainy season, river levels in town can rise quickly. The old commercial district and riverside shophouses are often affected first, and moisture soaks deep into the walls of older buildings, which can take weeks to dry.

Nakhon Sawan is also a commercial and healthcare hub for the lower north of Thailand. People from surrounding districts and neighboring provinces travel into town to buy medicines and receive treatment. Pharmacies and clinics that can reopen quickly, and genuinely clean, therefore play a significant role in the health of many people in the weeks after a flood, when demand for medicines for diarrhea, skin infections, colds and wound care typically rises.

Many of these businesses share older multi-story shophouses, as in Wanna and Dr. Thanakorn's case. When one floor floods, humidity and odor travel up stairwells and service shafts, so a coordinated approach for the whole building is often the most effective.

The Solution: Medical-Grade Chemgene HLD4H Disinfection Plus Ozone Treatment by World Health Disinfection

The World Health Disinfection disinfection service uses Chemgene HLD4H, a disinfectant used in medical and healthcare settings. It acts against bacteria, viruses and fungi, has no harsh chlorine smell and is suitable for a wide range of surfaces. The team applies it as a fine ULV mist that reaches floors, the space under shelving, counters, stock rooms, waiting rooms and dental treatment rooms.

Ozone shock treatment is used for emptied stock rooms, waiting rooms and other areas with musty odors. It helps destroy mold spores and break down stale odors in the air and in porous materials such as upholstered waiting-room chairs, curtains and ceiling boards.

Each step has a defined role. Fogging deals with environmental surfaces where floodwater and hands have been. Ozone deals with the air and soft materials in rooms that have been cleared of stock. Neither touches the clinical processes that remain the responsibility of the pharmacist and dentist.

Why a fine ULV mist rather than ordinary spraying? Pharmacies and clinics are full of narrow gaps: between shelving units, behind display stands, under counters and around dental cabinetry. A coarse spray soaks a few surfaces and misses the rest, and it can leave puddles that damage flooring or electrical fittings. A fine mist drifts into these gaps, settles as a thin, even film and dries without soaking. That makes it both more thorough and gentler on the fittings and equipment that healthcare businesses depend on every day.

Our step-by-step process for pharmacies and clinics

1. Survey and planning: The team checks the flood line, stock rooms, medicine refrigerators, treatment rooms, plumbing and AC systems, and plans the work together with the pharmacist or dentist.
2. Separating medicines and supplies: We advise moving medicines, medical supplies, dental materials and already-sterilized instruments out of the area, or sealing them in closed cabinets, before service day. Flood-exposed medicines are set aside for disposal according to public health guidance.
3. Initial cleaning: Remove mud from floors, under shelving and from drains, and clean AC filters.
4. Disinfection fogging: Chemgene HLD4H is fogged throughout, focusing on floors, shelving, counters, door handles, stair rails, waiting-room chairs and environmental surfaces around the dental unit.
5. Ozone treatment: Stock rooms and waiting rooms are sealed one at a time and treated according to their size, with no people, pets, plants or medicines inside.
6. Ventilation and re-check: Rooms are ventilated until the ozone has safely broken down into oxygen. The team checks odor and condition with the owner before medicines and supplies are returned.

Area by Area: Where to Focus

Dispensing counter and retail floor. The counter, card machine, pen holder and the front edge of shelves are touched by many customers daily. These are priority points for fogging, followed by regular wiping during opening hours.

Drug stock room. Empty it first, discard damaged boxes, clean the shelving and floor, then fog and ozone-treat the empty room. Allow it to dry and ventilate fully before restocking, and keep boxes off the floor afterwards.

Medicine refrigerator area. Clean and disinfect around the refrigerator and check that seals are intact. Have a technician confirm the unit works properly and that temperature monitoring is reliable before storing products again.

Dental treatment room. Floors, walls, cabinets, light handles and the chair's environmental surfaces are fogged with Chemgene HLD4H. Drains are flushed first to reduce sewer odor. The dental unit's water lines and suction system are maintained according to the manufacturer's instructions.

Waiting room and stairwell. Upholstered chairs, curtains and the shared stairwell often carry the stale smell up from the flooded floor. Ozone treatment helps here, together with fogging of rails and door handles.

10 Reasons Pharmacies and Dental Clinics in Nakhon Sawan Choose WHD

1. Chemgene HLD4H is a disinfectant used in medical settings, suited to premises that serve patients.
2. ULV disinfection fogging reaches under shelves and into gaps that wiping cannot.
3. No harsh chlorine smell to bother patients with respiratory conditions.
4. Ozone treatment tackles mold spores in stock rooms and waiting rooms.
5. The team plans together with pharmacists and dentists, respecting existing professional procedures.
6. Reduce the risk from floodwater germs, including those that cause leptospirosis.
7. Reopen to patients sooner and with confidence.
8. Explain the process clearly to patients and build trust.
9. Well suited to multi-story shophouses where a pharmacy and a clinic share a building.
10. Chemgene HLD4H spray is available for ongoing wipe-downs of high-touch points during the day.

Before and After

What Healthcare Business Owners Tell Us

"We wrote off all the flood-exposed stock according to the guidelines, but the shop and the stock room still smelled damp. After fogging and ozone treatment, the smell was largely gone. The team also helped us coordinate with the clinic upstairs, so the whole building could reopen at the same time."
— Pharmacist and pharmacy owner, Mueang Nakhon Sawan (a representative scenario from the field)

Checklist Before Reopening to Patients

• Separate medicines and supplies that touched floodwater, and temperature-controlled products whose refrigerator was off for too long, and handle them according to public health authority guidance.
• Have a technician check medicine refrigerators, electrics and backup power before use, and resume normal temperature logging.
• Check the dental unit, water lines, suction and air compressor according to the manufacturer's instructions.
• Clean AC filters, and consider a coil clean if humidity was high.
• Book disinfection fogging and ozone treatment after initial cleaning and before bringing in new stock.
• Prepare a notice or message for patients explaining that the pharmacy and clinic have been professionally restored.

Keeping a simple record of what was done and when, including the date of treatment, the areas covered and the products removed from sale, is also good practice. It helps answer questions from patients, landlords or inspectors, and makes it easier to plan if the area floods again in future.

Communicating With Patients

After a flood, patients notice details. They look at the floor, they smell the air and they ask questions, sometimes directly, sometimes only to themselves. A clear, calm explanation helps them feel safe. For a pharmacy, a short notice near the counter can explain that flood-exposed stock has been removed, that the premises were professionally disinfected and ozone-treated on a given date, and that refrigerated products are being monitored as usual. For a dental clinic, the receptionist can explain that the clinic environment has been disinfected and that instruments continue to be sterilized according to professional standards.

Keep the language simple and factual. Avoid exaggerated promises such as "100 percent germ-free," which no responsible provider can guarantee. Patients tend to trust specific, honest information far more than marketing slogans, and that trust is what brings them back.

Preparing for the Next Flood Season

Pak Nam Pho has a long history of high water, and the experience of 2026 is a useful moment to plan ahead. Consider raising the lowest shelves in the pharmacy and stock room so that medicine boxes sit above likely flood levels. Keep a list of temperature-sensitive products and a plan for moving them to a safe location if power is cut. Check whether the medicine refrigerator and critical equipment can be connected to backup power.

For multi-story buildings, agree with neighboring tenants on how to share information during a flood and how to coordinate the clean-up afterwards. Keep the contact details of your disinfection provider handy, together with a simple checklist like the one above. When the water arrives, decisions are easier if they have already been made calmly beforehand.

Frequently Asked Questions

Q: Can fogging or ozone treatment make flood-exposed medicines usable again?
A: No. Medicines that touched floodwater should be separated and handled according to public health guidance. Our service is for restoring the premises and the air.

Q: Do we need to remove medicines that were not flooded?
A: For ozone treatment, yes, or keep them in sealed cabinets. For fogging, the team plans with the pharmacist to prevent mist from settling directly on medicine packaging.

Q: Can Chemgene HLD4H be used in a dental treatment room?
A: Yes, on environmental surfaces such as floors, walls, counters and surfaces around the dental unit. Dental instruments still need to go through sterilization according to professional standards as usual.

Q: How soon can we reopen?
A: It depends on the size of the premises and number of rooms. A small to medium pharmacy or clinic can usually be completed within one day, including ventilation time.

Q: Can the work be done outside opening hours?
A: Yes. We can schedule service when the pharmacy or clinic is closed so patients are not affected. The team confirms timing after the survey.

Q: Is the service suitable for medical clinics, physiotherapy rooms and laboratories too?
A: Yes. Any healthcare premises affected by flooding can benefit from the same approach. The team adapts the plan to the equipment, materials and workflows in each type of facility, and works together with the responsible professional.

Q: Which areas do you serve?
A: Mueang Nakhon Sawan, Chum Saeng, Banphot Phisai, Kao Liao, Phayuha Khiri, Krok Phra and nearby areas of the lower north.

Restore Medical-Grade Cleanliness and Patient Trust

Talk to World Health Disinfection to plan disinfection fogging and ozone treatment for pharmacies, drug storerooms and dental clinics in Mueang Nakhon Sawan. If you share a building with other healthcare businesses, let us know so we can coordinate the work for everyone. Photos of the affected rooms sent by LINE help the team prepare a plan quickly, so your pharmacy or clinic can get back to caring for patients as soon as possible.

View Disinfection Service – Click Here

Book Ozone Treatment – Click Here

Call 065-556-6294 · LINE @whd268 · worldhealthdisinfection@gmail.com

Related Services and Reading

• Chemgene HLD4H disinfectant
• Ozone odor and chemical residue removal
• Master Ozone Generator
• All articles

References: WHO – Floods fact sheet and the Department of Disease Control, Thailand Ministry of Public Health.