A Story from the Field: The Village LINE Group Admin and the Endless Questions

P'Nok is fifty-two and the admin of the LINE group for a housing estate in Pak Kret, Nonthaburi. Once the floodwater receded, the group that had always been quiet suddenly became busy every evening. One resident asked, "How many hours do we have to leave the house when they spray?" Another asked, "Can my cat stay in during the ozone treatment?" A third complained, "I've washed the house three times and it still smells musty." Some people shared clips claiming ozone is dangerous; others insisted that bleach was all you needed.

P'Nok answered as best she could, but the same questions came back every day, and the information people were sharing often contradicted itself. In the end she decided to call a disinfection team, ask them to answer the questions residents asked most often, and pin the answers to the top of the group.

This article is that kind of collection. It brings together the questions we hear from families in Mueang Nonthaburi, Pak Kret, Bang Bua Thong, Bang Yai, Bang Kruai and Sai Noi, and from the surrounding provinces, including Pathum Thani and western Bangkok. The questions are grouped into four sections, from before booking to service day, safety and aftercare, so that by the end you can make your decision with confidence. Read it from start to finish, or jump straight to the section that matches where you are in your own recovery.

Why This Topic Raises So Many Questions

• The health risks are real: Floodwater carries germs from drains, including bacteria that cause diarrhea and the bacteria linked to leptospirosis, while mold that appears after the water recedes can trigger allergies and asthma.
• Many households have never used such a service: They do not know what to prepare, how long it takes or how safe it is.
• Information on social media is contradictory: Some sources say ozone is dangerous; others say you do not need to do anything at all.
• Money and time are limited: After a flood, every family faces expenses on many fronts and wants to be sure that whatever they spend is worthwhile.

Clear, honest answers help families make better decisions, avoid unnecessary worry and focus their limited energy where it matters most.

We have tried to keep every answer practical and honest. Where something depends on your particular house, such as cost or timing, we say so rather than guessing, and we explain what information helps the team give you an accurate answer. Where safety is involved, especially with ozone, we explain not only what the rules are but why they exist. And where a question touches on health, we remind you that a doctor is the right person to assess symptoms, while our role is to make the environment around your family clean and safe. If your question is not on this list, that does not mean it is unusual; it simply means it deserves a direct conversation with the team.

Why DIY Fixes Often Fail to Solve the Problem

• Bleach: It only disinfects the surface it touches, the fumes are irritating, and it does not reach mold inside porous materials.
• Running fans to dry things out: This reduces moisture, but it spreads spores around if the mold has not been killed.
• Air fresheners and charcoal: They mask the smell for a while, but the source remains.
• Painting over stains: If the wall is still damp, mold pushes the paint into blisters and returns.

That is why fine-mist disinfection fogging combined with ozone treatment is an option many families consider, and it is what leads to the 20 questions below.

Section 1: Before Booking (Questions 1 to 5)

1. The water has only just gone down. Should I book now or wait until the house is dry?
Get in touch straight away for advice and to reserve a slot. However, the actual service day should come after the mud has been removed, the floors washed and the ground-floor electrics checked by an electrician, because disinfectants work best on clean surfaces. Demand is usually high after a flood, so booking early helps you get a date that suits you.

2. What information should I have ready when I call?
Your location, the type and size of the house, the number of floors, how high the water rose and how long it stayed, which rooms have mold or a musty smell, and who lives in the house, for example young children, older people or pets. If you can send photos on LINE, the assessment will be much more accurate, and the conversation will be shorter.

3. How much does it cost?
It depends on the size of the area, the number of floors, the extent of the damage and the services you choose. The team will assess your home from the information and photos you provide and send you a quotation before any work begins. Ask clearly which areas the price covers, and whether it includes both disinfection fogging and ozone treatment, so there are no misunderstandings later.

4. Do I have to treat the whole house, or can I do just the ground floor?
You can treat specific areas. However, if the upper floor smells musty or feels damp because the house was closed for a long time, it is worth including it. The team will advise you on survey day, and you can decide together based on what you both see and smell.

5. What should I throw away first?
Items that soaked in floodwater for a long time and cannot be washed, such as mattresses, rugs, swollen particleboard furniture and cardboard boxes, usually need to be discarded. Disinfecting from the outside cannot make materials that have absorbed contaminated water deep inside safe again. Take photos of these items before you throw them out, in case you need them later for an insurer or a local agency.

Section 2: Service Day (Questions 6 to 10)

6. What happens on the day?
The team surveys the house with you, gives advice on clearing the space, carries out fine-mist disinfection fogging, runs an ozone treatment, ventilates the house and then re-checks it, giving you advice on how to look after your home afterwards. Each step has a purpose, and the team will explain it as they go.

7. Which disinfectant do you use?
The WHD team uses CHEMGENE HLD4H, which has no harsh smell. It is applied with ULV foggers that produce droplets small enough to reach room corners, the undersides of furniture and the gaps a cloth cannot reach.

8. What is the difference between disinfection fogging and ozone treatment?
Disinfection fogging focuses on reducing germs on surfaces. Ozone treatment helps destroy mold spores in the air and inside materials and breaks down musty odor molecules. The two complement each other, which is why many households choose both, especially homes with mold stains on the walls as well as a musty smell trapped in curtains, mattresses and furniture.

9. How long does it take?
It depends on the size of the house and the extent of the problem. Before starting, the team will always give you an estimated time, including how long the family will need to be out of the house, so you can plan the day around it.

10. Do I need to be there the whole time?
Someone should be there at the start to walk through the house with the team, and at the end to receive aftercare advice. During the ozone treatment, however, nobody may be inside. Many families use that time to run errands, visit relatives or have a meal nearby.

Section 3: Safety (Questions 11 to 15)

11. Is ozone treatment dangerous?
High concentrations of ozone should not be breathed in, which is why treatment takes place in a closed space with no people, pets or plants inside. The team controls the dose according to the size of the area and ventilates until the ozone has broken down before anyone goes back in. When these steps are followed, ozone treatment can be used safely. The most important rule is never to open the door to look inside during treatment, even if you have forgotten something. Tell the team instead and let them handle it.

12. What about pets, aquariums and plants?
They must all be taken out of the house before ozone treatment, including birds, fish and potted plants. Bring them back in once ventilation is complete. If moving a large aquarium is difficult, mention it when you book so the team can advise on the best approach.

13. Will electrical appliances and valuables be damaged?
Sensitive electronics, artworks and rubber items should be removed or covered as the team advises. The team uses a controlled ozone dose and will tell you in advance how to handle specific items, so you can prepare without guessing.

14. Is it suitable for homes with young children, pregnant women or older people?
Yes, and these are often the homes where it matters most, because these groups are more sensitive to mold and germs. They simply need to be out of the house during the work and return after ventilation is complete. If you have specific health concerns, please also consult a doctor. For bedridden patients or anyone who uses medical equipment at home, let the team know in advance so the move and the timing can be planned properly.

15. How should I store food, medicines and baby items?
Put them in tightly sealed containers or take them out of the house, including baby bottles, teats and toothbrushes. Clothes in closed wardrobes do not need to be removed, but if a wardrobe smells musty, the team may suggest leaving its doors open during the treatment.

Section 4: After the Service (Questions 16 to 20)

16. When can we go back inside?
Once ventilation is complete, the ozone has broken down and the team tells you it is safe to enter. The team will give you an estimate before work starts, so you can plan where to wait and when to come home.

17. Is it normal to notice a slightly unusual smell afterwards?
Sometimes there is a faint, clean smell, a little like the air after rain, at first. It fades with continued ventilation. If the original musty smell is still strong, let the team know so they can check whether there is a hidden source that needs attention.

18. How should I look after the house in the first week?
Open the windows every day, keep furniture a little away from the walls, use Chemgene spray to wipe high-touch points, and keep an eye on the spots where mold used to be. Taking photos from the same angles on day 7 and day 30 will show you straight away if anything changes.

19. When can I repaint?
When the wall is dry right through, not just on the surface. You can use a moisture meter or ask your painter. Painting too early is one of the main reasons mold comes back, so it is worth being patient.

20. What if the mold or musty smell comes back?
Photograph the spot and send it to the team on LINE for assessment. In most cases the cause is remaining moisture, such as a wall that has not fully dried or a leak, which needs to be fixed at the same time. The sooner you report it, the smaller the job, and it can often be handled without removing more materials.

Five Myths We Hear Again and Again

Myth 1: "If it looks clean, it is clean." Floodwater leaves behind germs and moisture that you cannot see. A floor that has been washed and looks spotless can still carry bacteria in its joints and along the skirting, and a wall that looks dry on the surface can still be damp inside.

Myth 2: "More bleach means more protection." Using large amounts of bleach in a closed house mainly produces strong fumes that irritate the eyes, nose and throat. It does not reach mold inside porous materials, and it can damage some surfaces. More is not better; the right method is better.

Myth 3: "Ozone is always dangerous, so it should never be used in homes." Ozone must be handled correctly, which is exactly why professional treatment follows strict rules: nobody inside, a controlled dose and full ventilation before re-entry. Used this way, it is a valuable tool for removing spores and odors that other methods cannot reach.

Myth 4: "Once the cool season comes, the mold will die by itself." Dry weather slows mold down, but the spores remain and become active again when the humidity returns. Hidden moisture in walls and floors can also keep mold growing quietly through the season.

Myth 5: "One treatment means the problem can never come back." Professional treatment removes the existing contamination, but if a leak or a damp wall remains, mold can return. Good ventilation, patience before repainting and fixing the source of moisture are what keep the result lasting.

How to Use These Answers in Your Community

If you are a village committee member, a condominium manager or simply the person neighbours turn to for advice, here are a few practical ways to make the most of this list.

• Pin it in your group chat so that new members can find the basics without asking again.
• Collect specific questions separately. Questions about a particular house, such as a damaged ceiling or a sewage backflow, are best answered by sending photos directly to the team.
• Coordinate survey dates. When several houses in the same soi need help, arranging surveys on the same day can make scheduling easier for everyone.
• Share safety reminders about ozone treatment, especially for families with pets, aquariums and older relatives.
• Encourage photo records. Before-and-after photos help each household track progress and spot problems early.

Communities that share reliable information tend to recover more smoothly, with fewer mistakes, less stress and fewer homes left with lingering mold. A single well-informed neighbour can make a real difference to an entire street.

The WHD Disinfection and Ozone Process at a Glance

1. Site survey: The team walks through every room with you, identifying risk areas and materials that should be discarded.
2. Clean-up advice: Guidance on removing mud, taking out water-swollen materials and storing belongings.
3. Disinfection fogging with Chemgene HLD4H: ULV fine-mist foggers reach every corner.
4. Ozone shock treatment: The house is closed and an ozone generator runs at a controlled dose to destroy mold spores and break down musty odors.
5. Ventilation: Doors and windows are opened until the ozone has broken down.
6. Re-check and advice: The team checks the smell and risk points and explains how to look after the house.

Ozone safety: No people, pets or plants may be in the house during treatment. Sensitive electronics and rubber items should be removed or covered, and the house must be properly ventilated before anyone goes back in.

10 Reasons Families in Nonthaburi and the Surrounding Area Choose WHD

1. Straightforward answers before you book, with initial assessments from photos sent on LINE.
2. Fine-mist disinfection fogging that reaches every corner of the house.
3. Use of CHEMGENE HLD4H disinfectant, which has no harsh smell.
4. Ozone treatment that removes mold spores and musty odors embedded in materials.
5. Clear explanations of ozone safety before work begins.
6. Planning that gives families, pets and plants time to move out properly.
7. Advice on covering or moving electrical appliances and valuables.
8. Further reading on residential ozone disinfection.
9. An optional dust mite removal service for mattresses and sofas.
10. Easy follow-up if you have questions or notice a problem after the service.

Before and After: P'Nok's Village LINE Group

What Our Customers Say

"I used to answer questions in the group until late at night. Now I just share the link to the answers. If someone has a question about their own house, they send photos to the team. We've had our house done too, and the musty smell in the living room has mostly gone."

— P'Nok, village LINE group admin, Pak Kret, Nonthaburi (illustrative scenario)

More Questions

Q: Which areas do you serve?
A: All districts of Nonthaburi, namely Mueang Nonthaburi, Pak Kret, Bang Bua Thong, Bang Yai, Bang Kruai and Sai Noi, as well as the surrounding area, including Pathum Thani and Bangkok. Contact us to confirm dates and routes.

Q: Can you treat shops, offices or schools?
A: Yes. The team plans the work outside business hours or on weekends so that it does not disrupt normal use.

Q: If some roads are still flooded, can the team get to us?
A: Tell us about road conditions when you book. The team will plan the route or reschedule as needed.

Q: Can I share this article with my neighbours?
A: Please do. Many questions are the same from house to house, and having reliable answers in one place helps the whole community recover faster and with less worry.

Still Have a Question? Ask the Team.

Serving Nonthaburi, Pak Kret, Bang Bua Thong, Bang Yai, Bang Kruai, Sai Noi and the surrounding area.

View Disinfection Service – Click Here

Book Ozone Treatment – Click Here

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

Related Articles and Links

• Residential ozone disinfection
• Ozone treatment for odors and chemical residue
• Master Ozone Generator
• All articles
• External sources: WHO: Floods and health and Department of Disease Control, Thailand

#PostFloodDisinfection #DisinfectionService #OzoneTreatment #IsOzoneSafe #MoldRemoval #OdorRemoval #Disinfectant #FloodRecovery

Keywords: post-flood disinfection FAQ, is ozone treatment safe, post-flood disinfection, ozone treatment, mold removal, musty odor removal, Nonthaburi, Bangkok metropolitan area 2026