A typical scenario (an illustrative example, not a review from any specific customer)

Grandma Paen and an 18-month-old in a townhouse on Soi Ramkhamhaeng 24

Grandma Paen is 71. She lives in a two-storey townhouse on Soi Ramkhamhaeng 24 with her daughter, who works in an office, and her grandson, who is eighteen months old and has only just started walking with confidence. Because stairs are hard on her knees, her bedroom is on the ground floor, right next to the toddler's play corner, which is covered wall to wall in bright interlocking foam mats.

After several days of non-stop rain, water from Hua Mak Road flowed into the soi. As it rose outside, the drain in front of the house began pushing water back up in a foamy bubble. The smell of the sewer reached the living room before the water reached the doorstep. Her daughter lifted the mattress onto the table, rolled the foam mats up and carried them upstairs, then moved grandma and the baby into a single upstairs room for several nights.

When the water went down it left a thin layer of silt on the tiles, a brown tide line about a hand's width up the walls, and a smell that was hard to place: part drain, part damp. Her daughter took a day off to scrub floors and wipe walls. The trouble was that the toddler could not understand why he was no longer allowed to play downstairs. Children his age crawl, sit and put everything in their mouths. Grandma, meanwhile, wanted her own bed back because climbing the stairs hurt every time.

The question in this house was not "is it clean yet?" It was "is this floor safe enough for an 18-month-old to crawl on?" and "is this bedroom safe enough for a woman in her seventies with a chronic condition to sleep in?" Questions like that cannot be answered just by looking.

Where Hua Mak and the area around Soi Ramkhamhaeng 24 flooded, according to news reports

The points below come only from published reports, so you can compare them with the location of your own home.

• Hua Mak Road at the mouth of Soi Ramkhamhaeng 24: listed as a point with water on the road in the Thai PBS report of 29 September 2026, 13:19. The report does not give a depth for this point, so we do not invent one.
• Ramkhamhaeng Soi 20: about 10 cm of water on the road in the same report.
• Ramkhamhaeng Soi 33 and opposite Soi 53: about 15 cm and 20 cm respectively.
• Ramkhamhaeng Road, Rama 9 intersection to Lam Sali intersection: listed as a flooded stretch in the same report. This is the main road Hua Mak residents use to get to work every morning.
• Ramkhamhaeng University: Thai PBS reported flooding from 25 September to 1 October 2026, close to 2 metres deep in places for about six days, with more than half of its 65 buildings affected.
• Khlong Saen Saep: Thairath reported that water from Khlong Saen Saep overflowed onto roads in the Lat Phrao to Ramkhamhaeng area.
• Bangkok overall: roughly 300 mm of rain fell in about 48 hours between 24 and 27 September 2026. The BMA declared all 50 districts a disaster zone on 26 September, and the Department of Disaster Prevention and Mitigation reported on 2 October that about 329,000 Bangkok households had been affected.

An important point: the mouth of a soi is usually where water from the main road pours in. Homes further down the soi with floors below road level can hold water longer than the main road suggests, especially houses with a rear kitchen extension or a lowered parking bay.

How Hua Mak differs from the main road, and why germs here are a family matter

If Ramkhamhaeng Road is a student city, Hua Mak Road and the sois that branch off it are family territory. You find townhouses, shophouses with a small business on the ground floor, older detached houses whose floors now sit below a road that has been raised several times, compact apartment blocks, hair salons, car repair shops, grocery stores, and homes whose ground floor doubles as a stockroom for online sellers.

These homes share three traits. First, the ground floor works hardest: it is the living room, the kitchen, the elderly person's bedroom and the child's play area all at once. Second, ventilation is poor, because terraced townhouses only have windows at the front and back. Third, the household spans generations, from babies to grandparents living with diabetes or high blood pressure, groups whose immune defences are weaker than those of working-age adults.

That is why Hua Mak households should plan their flood recovery around the most vulnerable person in the house, not the strongest.

The germs that follow a flood, sorted by who in a Hua Mak home is most exposed

The WHO and CDC both warn that floodwater is often contaminated with sewage and germs, and that anything it touched should be treated as contaminated until cleaned and disinfected. In a multi-generation home, though, the risk is not shared equally.

Toddlers: hand, foot and mouth disease, RSV and rotavirus

Crawling children touch the floor more than anyone else in the house. Hands go from floor to toy to mouth in seconds. Hand, foot and mouth disease is common in young children and spreads through contaminated toys and surfaces; it causes fever, mouth sores and spots on the hands and feet. RSV is a respiratory virus that can make some small children struggle to breathe, and it spreads more easily when a family is packed into closed, damp rooms. Rotavirus is a major cause of diarrhoea in young children and can dehydrate them quickly. Foam mats, soft toys and plastic toys that went under water need to be dealt with before a child plays with them again.

Grandparents: E. coli, mould and wound infections

An older person sleeping on the ground floor is closest to the source. Faecal bacteria such as E. coli, carried in by drain water, can cause diarrhoea and dehydration, which tends to hit older people harder. Mould on walls and mattresses triggers coughing, wheezing and allergies. Older adults with diabetes and foot sores should be especially careful and never walk barefoot on floors that have not yet been cleaned.

Working adults who waded: leptospirosis

Anyone who waded along Hua Mak Road or through the soi to get to work, or to carry belongings in and out, is exposed to Leptospira bacteria from rat urine. The bacteria enter through cuts or through the eyes and mouth. Symptoms include a sudden high fever, headache and severe calf pain. If these appear within one to two weeks of wading, see a doctor straight away and mention the flood exposure.

Everyone: Salmonella and norovirus from the kitchen

Townhouse kitchens usually sit at the back of the ground floor and are often the first room to flood. Salmonella is linked to food poisoning, while norovirus causes vomiting and diarrhoea and passes easily between family members. Fridges that took in water, wooden food cupboards, rice bins and condiments stored on the floor should be thrown away or cleaned very thoroughly before use.

The musty smell: a sign something is still there

A musty smell after a flood usually comes from moisture trapped in materials and from mould or bacteria starting to grow. The WHO and CDC advise cleaning and drying within 24 to 48 hours. If the smell is still there days later, there is still a source to deal with.

The hidden costs for a home on Soi Ramkhamhaeng 24 when germs are left behind

Medical bills and days off: a child with hand, foot and mouth disease has to stay home from nursery for days, and a parent has to take leave too. An older person who becomes dehydrated from diarrhoea may need hospital care, costing the whole family money and time.

Income from home businesses: a hair salon, massage shop or grocery on the ground floor of a Hua Mak Road shophouse may never see a customer again if they walk in and smell damp. Online sellers who store stock downstairs risk shipping parcels that smell musty.

Repairs that grow: walls painted over while still damp and without dealing with the mould often need to be stripped and redone within months. Particle-board cabinets with mould inside usually have to be replaced entirely.

Worry that never ends: every time the baby coughs or grandma has an upset stomach, the family wonders whether it is the flood. Doing every step properly removes a great deal of that worry.

Why the usual clean-up is not enough for a home with small children and older adults

Mopping with scented floor cleaner: ordinary floor cleaners are made for everyday dirt, not for germs from sewage. The fresh scent makes a floor feel clean while germs stay in the grout.

Pouring strong bleach everywhere: many families assume stronger is better. But concentrated bleach irritates the airways of toddlers and older adults, can release dangerous gas when mixed with some toilet cleaners, and works poorly on floors that still carry silt.

Wiping only what you can see: lower walls, sofa legs, the space under the fridge, door frames and the gaps between furniture and walls are all places the water reached and people rarely wipe.

Sun-drying foam play mats and reusing them: children's foam mats have joints and porous surfaces where dirty water can soak in. If they sat in water for long, consider throwing them away.

Closing the room and turning on the air conditioner: running an air conditioner in a room with damp walls can pull mould spores into the unit and blow them out every time it runs. If water reached the unit, have a technician check and clean it.

How the WHD disinfection spraying service works for Hua Mak homes and shophouses

World Health Disinfection (WHD) provides disinfection spraying for houses, townhouses, shophouses, condominiums, shops and offices. According to the service information, trained technicians use spraying and/or ULV (Ultra Low Volume) fogging, which turns the disinfectant into a fine mist that reaches corners a cloth cannot.

The disinfectant is CHEMGENE HLD4H, a medical-grade disinfectant from the United Kingdom containing Benzalkonium Chloride and Didecyldimethylammonium Chloride. According to the service information it covers viruses, bacteria and fungi, including the hand, foot and mouth virus, RSV, H1N1, H5N1 and COVID-19, with a stated efficacy of 99.99%. The service page also lists approvals or endorsements from the Department of Medical Sciences, Mahidol University, NHS England and the EN 14476:2013+A2:2019 standard.

For families with toddlers, one detail stands out: the list of germs on the service page includes both the hand, foot and mouth virus and RSV, which are exactly what many parents worry about once the water recedes.

Five steps, from phone call to moving back in

1. Book: call 065-556-6294 or LINE @whd268. Say whether you are on Hua Mak Road or Soi Ramkhamhaeng 24, whether it is a townhouse or shophouse, how many floors, and which rooms the water reached.
2. Prepare the house: remove the silt, wash floors and walls, discard damaged items, and pack food, baby bottles, teats, cutlery and toothbrushes into closed boxes or move them out of the spray zone.
3. Technicians spray: children, older adults, other family members and pets should leave the zone being sprayed. Where an older person has trouble with stairs, the team can plan to treat the ground floor while everyone waits upstairs or outside, as the technicians advise.
4. Wait about 30 minutes: according to the service information, wait about 30 minutes after spraying and follow the re-entry time the technicians give you.
5. Air the house and resume normal use: open doors and windows, then use the home as usual.

If a ground-floor bedroom still smells musty after the walls are dry, you can also consider the residential ozone disinfection service as a complementary step.

Extras: according to the service information, customers receive a free CHEMGENE spray bottle and WELLGIENIC wet tissues, and a tax invoice is available.

10 reasons Hua Mak families choose disinfection spraying after the water goes down

1. A floor a toddler can crawl on: the ground floor belongs to the youngest children, and spraying after washing reduces germs on the surfaces they touch most.
2. A germ list that matches parents' worries: the WHD disinfection spraying service page names the hand, foot and mouth virus and RSV.
3. Grandparents back in their own room sooner: no more weeks of painful trips up and down the stairs.
4. Reaches what cloths miss: ULV mist settles under cabinets, behind sofas and along skirting.
5. Medical-grade disinfectant: CHEMGENE HLD4H from the UK, which the service page lists as covering viruses, bacteria and fungi.
6. Suits shophouse businesses: hair salons, massage shops and groceries on Hua Mak Road can welcome customers back with more confidence.
7. Not much time: about a 30-minute wait after spraying, according to the service information, with no need to move out for days.
8. Trained technicians: they can advise on preparing a home with children and older adults safely.
9. Extras to keep using: the free spray bottle and wet tissues are handy for daily wiping of stair rails and door handles.
10. Easy to book: book disinfection spraying by phone at 065-556-6294 or LINE @whd268.

Before and after: a townhouse on Soi Ramkhamhaeng 24

Example case: a hair salon in a Hua Mak Road shophouse

An illustrative example to explain the process, not a verified customer review.

Jiab runs a small hair salon on the ground floor of a three-storey shophouse on Hua Mak Road, not far from the mouth of Soi Ramkhamhaeng 24. The second and third floors are home to her family, including her mother, who is nearly eighty, and her five-year-old daughter.

Water from the road came into the salon and covered the base of the shampoo chairs, the wash basins and the towel cabinet. A whole cabinet of towels turned into wet cloth that smelled of the drain. Jiab threw all of them away, along with cosmetics and opened products that had touched the water, sent her hair dryers to a technician for checking, and spent two days washing the floor, lower walls and basins with detergent and water, leaving the roller shutter open for airflow.

Once the salon was ready, the team sprayed the ground floor and the staircase up to the living quarters. During the work Jiab took her mother and daughter to a relative's house in the next soi. After spraying they waited about 30 minutes as advised, opened doors and windows to air the space, and rinsed the basins and combs with clean water once more.

Two days later the salon reopened. Jiab put a small sign at the entrance saying the shop had been cleaned and disinfected after the flood, and several regulars said that made them comfortable coming back. She now uses the free spray bottle on the chairs and armrests between customers.

Recovery checklist for Hua Mak homes with toddlers and older adults

Before spraying

• Keep children and older adults away from areas being cleaned.
• Switch off the ground-floor breaker and have an electrician check sockets the water reached.
• Whoever cleans should wear boots, rubber gloves and a mask, and cover any cuts on hands and feet.
• Shovel out silt; discard mattresses, pillows, soft toys, carpets and foam mats that soaked for long.
• Wash hard plastic toys that are still in good shape with detergent and water; throw out toys that cannot be washed.
• Throw away food, formula and condiments that touched the water, and anything in the fridge that spoiled during the power cut.
• Wash floors, lower walls, furniture legs and door frames, then dry everything as fast as possible.
• Pack baby bottles, teats, spoons, cups and toothbrushes into closed boxes.

After spraying

• Wait the full time the technicians advise, then air the rooms before bringing children and older adults back.
• Rinse children's utensils and equipment with clean water before use.
• Lay fresh mats before letting a child play on the floor again.
• Wipe door handles, stair rails and light switches daily for the first week.
• Check walls weekly; if new mould appears, find the moisture source.
• Watch for symptoms: a child with fever, mouth sores, spots on the hands or feet, or fast breathing; an adult with high fever and calf pain; anyone with severe diarrhoea. See a doctor at once.

FAQ: post-flood disinfection in Hua Mak

Can a home with toddlers and older adults be sprayed?

Yes, but everyone, including children, older adults and pets, must leave the zone during spraying and return only at the time the technicians give, after the space has been aired. According to the service information, the wait is about 30 minutes after spraying.

The news report gives no depth for the mouth of Soi Ramkhamhaeng 24. How do I know if my home needs it?

Look at your own house. If water came inside, left a tide line on the walls, backed up through an indoor drain, or left a sewer smell after it receded, treat the surfaces as having touched contaminated water.

Do I have to clean before the technicians arrive?

Yes. Spraying comes after silt removal and washing, because mud prevents the disinfectant from reaching the surface.

What about my child's toys after spraying?

Remove toys that go in the mouth, along with bottles and food containers, before spraying, or rinse them with clean water afterwards before a child uses them. We do not claim spraying leaves no residue at all.

If the house is sprayed, do we still need a doctor when my child has a fever?

Yes. Spraying reduces germs in the environment; it does not treat illness. Anyone with symptoms should see a doctor.

Can a shophouse business get a tax invoice?

Yes. According to the service information, WHD can issue a tax invoice.

Make the ground floor a place for the whole family again

If your home is on Hua Mak Road, Soi Ramkhamhaeng 24 or a nearby soi, tell us its size and which rooms the water reached, and the team will assess and book a visit.

Book Disinfection in Hua Mak

Call 065-556-6294 · LINE @whd268

Related links

• World Health Disinfection spraying service
• CHEMGENE HLD4H disinfectant
• Residential ozone disinfection service

References

• Thai PBS flood points and water levels, 29 September 2026: thaipbs.or.th/news/content/558830
• Thai PBS on Ramkhamhaeng University flooding: thaipbs.or.th/news/content/559039
• Dailynews, 29 September 2026: dailynews.co.th/news/6232155
• Post Today: posttoday.com/blogs/general-news/749418
• CDC Floods: cdc.gov/floods
• Department of Disease Control, Thailand: ddc.moph.go.th