A typical scenario (an illustrative example, not an interview with any resident)

Grandma Boonma is in her seventies and was born and raised in Krasae Bon. Her single-storey house sits only slightly above the ground and was built when she was a young woman. Next door is the durian orchard her son looks after. In all her years she had seen heavy rain many times. Water had filled the orchard ditches and pooled on the road out front, but it had never once come inside. So she kept everything at floor level as she always had: a wooden chest of clothes, her sleeping mattress, sacks of rice and a box of old photographs.

That night the rain would not stop. Her son came to say the stream was unusually high. A few hours later the yard was full of water, and it began creeping over the threshold. A rescue team arrived with a boat and life jackets and helped her aboard to stay with relatives on higher ground. She looked back at her house as the water climbed the table legs, stunned by a sight she had never imagined.

Days later, when her son took her back, the concrete floor was slick with mud. The mattress was too heavy with water to lift. The wooden chest holding her mother's woven skirts smelled musty and was speckled with mold. A long water line ran across the lower walls, the bathroom smelled like a backed-up drain, and the air felt heavy and damp.

Her son and the neighbours washed the house until it looked much cleaner, but every time Grandma sat inside for a while, she started coughing. Her son did not dare let her move back yet, and began looking for answers about what else the house needed before it was safe for her.

Where It Flooded in Moo 4, Krasae Bon, Klaeng: Facts From the News Report

According to 4forcenews on 29 September 2026, the key facts for Moo 4, Krasae Bon, Klaeng were:

• Water from the Prasae Reservoir overflowed the spillway and flooded the area.
• Several hundred households were affected, along with residents' durian orchards.
• Some residents who had lived there for 60 years said they had never experienced flooding like it.
• Rescue teams evacuated older residents, and sandbags were laid to hold back the water.
• As of 3:15 a.m. on 28 September 2026, the water level had not yet dropped.

Nationally, the Department of Disaster Prevention and Mitigation reported on 4 October 2026, via Thai PBS, flooding in 27 provinces plus Bangkok, covering 154 districts, 1,171,165 households and 3,262,676 people, and warned of renewed heavy rain from 4 to 7 October. Figures change daily, so residents should follow announcements from Klaeng district, the subdistrict administration and the agencies managing the reservoir.

This article uses only the reported facts above. Grandma Boonma's story and the example case are illustrative.

Why Homes That Had Not Flooded in 60 Years Are Harder to Recover

In areas that flood every year, owners adapt: raised floors, water-resistant materials, valuables upstairs, sandbags ready. Homes in Moo 4, Krasae Bon, which had not seen water like this in decades, were mostly not built with floods in mind. The result:

• Everything was at floor level. Mattresses, chests, wardrobes, rice sacks and documents went under together, creating a large amount of soaked, mold-prone material.
• Building materials were not water-resistant. Partition walls, ceiling boards, plywood, built-in cabinets and laminate floors absorb water and swell easily.
• Sockets and wiring sit low. They must be checked for safety before use.
• No experience of post-flood recovery. Many households did not know what to throw away, what to keep or what order to clean in.

Water spilling from the reservoir flowed through orchards, roads, animal pens and septic tanks before reaching homes, carrying soil, sediment, sewage and organic matter. While the level stayed high for days, all of this had time to settle and soak into materials inside the house.

Every Kind of Germ the Krasae Bon Flood Brings: Bacteria, Viruses, Mold and Odour

Bacteria: E. coli, Salmonella and leptospirosis

Floodwater that passes through farmland and septic systems is often contaminated with human and animal faeces, so E. coli, an indicator of that contamination, is likely to be present. Some types cause diarrhoea and cramps. Salmonella usually travels on contaminated food and utensils. Frail older people can become dehydrated quickly with diarrhoea, so extra care is needed. Kitchen items that went underwater, including dry food, condiments and daily medicines, should all be thrown away.

Leptospirosis, "rat urine disease", is a key risk for anyone wading into durian orchards or through standing water. The bacteria enter through cuts and water-softened skin. Early symptoms are high fever, headache and muscle pain, especially in the calves, plus red eyes. Anyone with these symptoms after wading must see a doctor immediately and mention the exposure.

Viruses: stomach bugs and respiratory infections

Norovirus and rotavirus cause vomiting and diarrhoea and spread through water, food, hands and surfaces. Norovirus passes very easily when people are crowded together, for instance when several families stay with relatives or in temporary shelters. Respiratory viruses such as influenza and RSV spread more easily in damp air among tired people in close quarters. Both deserve particular attention in older adults, as they can lead to pneumonia.

Mold: the enemy of a house where everything went under at once

Mold can start growing within 24 to 48 hours of materials getting wet, which is why the CDC advises cleaning and drying quickly. In a house where the water stayed for days, mold had time to spread into mattresses, pillows, clothing chests, wooden cabinets, partition walls and boxes of papers. Spores in the air cause coughing, sneezing, a blocked nose, eye irritation and asthma or allergy flare-ups. Older people with lung disease or weak immunity should stay out of heavily moldy rooms.

Musty and drain odours

Musty smells come from volatile compounds released by mold and bacteria; drain or toilet smells come from sewage and decomposing organic matter. They cling to fabric, wood and ceiling boards for a long time and show that moisture or contamination remains.

Caring for Older Residents in Krasae Bon After the Water Falls

The report that rescue teams had to evacuate older residents shows that many older people live in Moo 4, Krasae Bon. Bringing them home needs careful planning:

• Let younger family members do the cleaning. Older people should not shovel mud or scrub mold themselves; they risk slipping, injury and heavy spore exposure.
• Wait until the house is dry and odour-free. If the air still feels musty or breathing is uncomfortable, wait longer.
• Replace daily medicines. Anything that got wet or damp should be thrown away and replaced through the hospital.
• Keep the bedroom airy. No damp items in the room; open windows on sunny days.
• Watch for symptoms. Fever, worsening cough, breathlessness, calf pain, diarrhoea, drowsiness or refusing food mean a prompt visit to a doctor.

Young children, pregnant women and people with diabetes, heart or kidney disease, allergies or asthma also need extra care. Cleaning and ozone reduce germs in the environment, but they are not medical treatment and never replace a doctor. See guidance from the Department of Disease Control.

What Moo 4 Krasae Bon Households Face After the Flood

Health. Moving back into a damp house can bring coughs, a blocked nose, itchy rashes and diarrhoea, especially in older people and children, and symptoms tend to linger while the cause remains.

Cost. Damaged durian orchards need a lot of money to restore, so families want to save on the house. But mold left in partition walls, ceilings and built-in cabinets can mean ripping them out later at higher cost.

Time. Children working in other districts take leave to help, and repeated washing because the smell will not go wastes even more time and effort.

Family and feelings. For people who have lived in the same house for decades, home holds memories. Seeing it clean, dry and comfortable again does a great deal to ease the shock.

First Flood in Krasae Bon? What to Keep and What to Let Go

Households facing their first flood often struggle most with deciding what to save. A simple rule helps: hard, non-porous items can usually be cleaned, while soft, absorbent items that sat in dirty water for days are usually not worth the health risk.

• Usually worth cleaning: glass, metal and hard plastic items, ceramic dishes, solid wood furniture that has not split, and tiled or concrete floors and walls. Wash them with clean water and detergent, then dry them fully.
• Usually better discarded: mattresses, pillows, upholstered sofas, cardboard boxes, particleboard and plywood furniture that has swollen, carpets, food, medicines and cosmetics that touched floodwater.
• Handle with care: photographs, documents and family keepsakes. Rinse gently, dry them flat away from direct sun, and photograph important papers before they deteriorate further.

Removing the soaked, absorbent items early takes away the biggest sources of mold and odour, and makes every later step, including ozone, far more effective.

Why Mold and Musty Smells Keep Coming Back in Krasae Bon Homes

Households hit by their first flood tend to use familiar methods. They help, but have limits:

• Bleach alone. Works on smooth hard surfaces but does not reach moisture inside partition walls, ceilings and wood. Strong bleach in a closed room makes older people's noses sting and causes coughing, and it must never be mixed with toilet cleaners.
• Drying things indoors. Hanging wet mattresses, blankets and clothes inside raises indoor humidity and speeds up mold.
• Fans everywhere. They dry surfaces but blow spores into every room and do not remove germs.
• Odour blocks and fragrance sprays. They mask the smell briefly; the source stays.
• Repainting straight away. If the wall is still damp inside, paint blisters and mold returns.

Removing mud, washing with clean water, discarding what cannot be saved and drying the house always come first. After that, germs and odours remain in the air, in corners and in materials that hand cleaning cannot fully reach. That is where ozone helps.

Ozone Disinfection in Krasae Bon With WHD: How It Works and What Happens

Ozone (O3) is a strong oxidising gas. Released into a closed room at a controlled concentration, it reaches every part of the space, including under beds, behind cupboards, inside open drawers and ceiling gaps. It destroys the cell structures of viruses, bacteria and mold and breaks down odour molecules, then returns to oxygen (O2), leaving no chemical residue.

According to test results certified by the company, World Health Disinfection's (WHD) system was tested by the Department of Medical Sciences and Intertek (UK) and eliminates viruses, bacteria and mold by 99.99%. See the certificates.

The service step by step

1. Talk and assess by phone or LINE. Send photos, the floor area, the number of rooms and the post-flood condition so the job and the trip to Klaeng can be planned.
2. Check the house is ready. Mud must be gone and the house dry enough. Older relatives, children, pets and plants leave the area.
3. Seal each room and release ozone zone by zone. Typically about 30 minutes per zone.
4. Contact time. Ozone acts on surfaces and the air for the set period.
5. Rest and ventilation. Ozone breaks down, then the room is aired before anyone enters.
6. Aftercare advice. Especially on keeping an older person's bedroom dry.

Safety rule: ozone is used only in an empty, closed room. No people, pets or plants inside during treatment; re-entry only after the rest and ventilation period. Ozone does not replace washing, drying or medical care.

WHD is based in Bang Khae, Bangkok, with no branch in Rayong. Jobs in Krasae Bon and Klaeng are confirmed, including travel, by phone at 065-556-6294 or LINE @whd268. Same-day arrival cannot be promised.

The Right Time to Treat a Krasae Bon Home

With water still high in late September and more heavy rain forecast for 4 to 7 October, ozone should wait until:

• the water has receded and local authorities confirm it is safe to return;
• an electrician has checked the wiring;
• mattresses, pillows, cardboard and anything too soaked to save have been removed;
• floors and walls have been washed and aired until dry.

Meanwhile, families can contact the team for an assessment and book a date in advance, so there is little wait once the house is ready and older relatives can come home sooner.

10 Reasons Homes in Moo 4, Krasae Bon Should Consider Ozone After the Flood

1. Get the house ready for older relatives. Reduce germs and odours in bedrooms before parents and grandparents move back.
2. Whole-room reach. The gas gets under beds, behind cupboards and into ceiling gaps no cloth reaches.
3. Several germ groups at once. Bacteria, viruses and mold, 99.99% per company-certified tests. See the ozone disinfection service.
4. Odour removed at the source. Not masked with fragrance.
5. No residue. Ozone returns to oxygen, suiting homes with older people and children when the rest period is followed.
6. Protects treasured belongings. Rooms holding chests, wooden cabinets and keepsakes that have been cleaned and dried are treated for airborne germs and odour too.
7. Short cycles. About 30 minutes per zone typically. Details on the home ozone service page.
8. Less burden on working children. No more taking leave to scrub the house again because the smell will not go.
9. Tested. By the Department of Medical Sciences and Intertek, as certified by the company.
10. Promotion for whole-house jobs. Jobs of 15,000 baht or more get a free medical-grade disinfectant spray. See WHD ozone service.

Before and After an Orderly Recovery

Example Case: A Three-Generation Single-Storey Home in Krasae Bon

(An illustrative example of the process, not a review from any customer.)

Tom lives with his mother, who is in her seventies, and two young children in a single-storey house in Krasae Bon. The flood came in at about knee height and stayed for several days. Afterwards Tom and his relatives threw out the mattresses, sofa and swollen plywood wardrobe, washed the house with clean water and detergent, and opened it up to air. But his mother's bedroom, in a corner the sun never reaches, still smelled musty and had mold spots along the bottom of the wall.

Tom sent photos to the team on LINE. They advised cutting out the swollen sections of partition wall, letting the frame dry, and leaving all cupboards open. When the house was ready, a date was set for the trip to Klaeng. The house was divided into four zones: living room, kitchen, bathroom and bedroom, while the family waited at a relative's home.

After the rest and ventilation period, the family went back in. The bedroom smell was noticeably reduced and his mother moved home. Tom now opens the windows on sunny mornings and checks the wall corners after rain, as advised.

Recovery Checklist for Moo 4 Krasae Bon: Before and After Ozone

Before ozone

• Return when authorities say it is safe; switch off the mains before entering and have the wiring checked.
• Wear rubber boots, rubber gloves and a mask while cleaning.
• Keep older relatives and children away during mud removal and scrubbing.
• Throw away food, medicine, cosmetics and anything too soaked to save.
• Cut out swollen partition walls or ceiling boards so the frame can dry.
• Wash floors and walls with clean water and detergent, then air until dry.
• Call 065-556-6294 or add LINE @whd268 and send photos to plan.

After ozone

• Re-enter only after the rest and ventilation period the team gives you.
• Open windows on sunny days and avoid drying laundry indoors.
• Check wall corners, under cupboards and door frames after rain.
• Wash bedding and clothes brought back from temporary accommodation.
• Watch older relatives, children and anyone who waded; fever or calf pain means seeing a doctor.

FAQ: Ozone After the Krasae Bon Flood in Klaeng

Q: Is WHD based in Rayong?
A: No. WHD is in Bang Khae, Bangkok. Service in Krasae Bon is arranged and confirmed via 065-556-6294 or LINE @whd268, and same-day arrival cannot be promised.

Q: Can an older relative stay home during treatment?
A: No. Everyone, plus pets and plants, must leave the area and return only after the rest and ventilation period.

Q: The house is still damp. Can we treat it now?
A: Wash and dry first. Ozone comes afterwards; if the house is still very damp, mold can return.

Q: Will ozone fix the drain smell in the bathroom?
A: It reduces odour in the air and on surfaces, but if pipes or the septic tank are still overflowing or blocked, the plumbing must be fixed first.

Q: If someone is ill, will ozone help them recover?
A: Ozone is not a treatment. Anyone with fever, calf pain, diarrhoea or breathing trouble must see a doctor.

Q: How long does it take?
A: Typically about 30 minutes per zone plus the rest and ventilation period, depending on the number of rooms.

Get Your Krasae Bon Home Ready for the Family to Return

Send photos and the floor area for an assessment, then book once the house is dry.

See the Ozone Disinfection Service

Call 065-556-6294 · LINE @whd268

Related Links and References

• Ozone cleaning service
• Reducing chemical residue with ozone
• Test certificates
• Contact WHD
• 4forcenews (29 Sep 2026): Prasae Reservoir overflow floods Moo 4, Krasae Bon, Klaeng
• Thai PBS (4 Oct 2026): national flood situation per the DDPM
• CDC: Floods and cleanup safety
• Department of Disease Control, Ministry of Public Health

Note: figures and flood conditions in this article reflect the dates given in the news and DDPM reports and change daily.