The Central Chai Nat Flood of 2026 (B.E. 2569)

According to MGR Online, on 25 September 2026 (B.E. 2569) more than 18 hours of continuous rain in Mueang Chai Nat district left 20 to 30 centimetres of standing water on Phrom Prasoet Road, worst at the Wat Si Wichai junction. Wongto Road had 10 to 20 centimetres, the provincial hall area 20 to 30 centimetres, and the area around Anuban Chai Nat School about 20 centimetres, so the school announced a one-day closure.

Main roads in a town centre, near government offices and schools, are where restaurants, curry-and-rice shops, cafes and made-to-order kitchens serve civil servants, parents, students and office workers. When the road floods, customers disappear at once. When the water drops, shops rush to reopen to recover income, but they also need to be sure they are clean enough not to make customers ill.

Nationally, Department of Disaster Prevention and Mitigation (DDPM) figures as of 06.00 on 7 October 2026 (B.E. 2569), published by the Government Public Relations Department, listed 27 provinces plus Bangkok as affected, covering 123 districts and 984 subdistricts, with 1,154,875 households and more than 3.1 million people affected. Many restaurants and food courts in those areas face the same question: how to reopen fast and safely.

Example Case: A Food Court That Must Open for Lunch

The following is an illustrative example based on common situations. It does not refer to any specific restaurant or food court.

Hia Lek manages a medium-sized food court in a town centre: twelve stalls and about sixty tables. His main customers are civil servants, office staff and parents collecting children. On the night the rain would not stop, street water came in through the front doors and drain water backed up behind the kitchens. By morning the whole floor was covered in water mixed with leaves, plastic bags and a sewer smell.

When the water receded in the afternoon, every stall wanted to open for lunch the next day. Hia Lek had three cleaners, mops, buckets and floor cleaner. They swept and mopped until eight at night, but never reached the table legs, chair legs, lower walls, storage cabinets or the areas behind each stall.

The food court opened on time, but customers noticed a musty smell in the corners. Someone photographed mud on a table leg and posted it in a local community group. Two stalls were criticised for cleanliness, and some regulars ate elsewhere for the rest of the week.

Hia Lek told his tenants that next time the food court needs a disinfection sprayer that one person can use across the whole hall in a short time after washing, not just mopping, plus a clear routine that tells customers when the place was disinfected. That is why many food businesses look at the SOLO PORT 423.

Why Flooded Restaurants Carry More Risk Than You Can See

Urban floodwater usually comes from drains that collect wastewater from homes, shops and markets. When it enters a restaurant, it brings several groups of germs.

Bacteria

• E. coli, a marker of faecal contamination; on dishes or staff hands it can give customers diarrhoea.
• Salmonella, a major cause of food poisoning, thriving in food left in fridges during power cuts or in ingredients that touched floodwater.
• Leptospira, the cause of leptospirosis. Restaurants often have rats nearby; during floods rats move to higher ground and their urine mixes with the water. Staff wading in to clean must take care.

Viruses

• Norovirus and rotavirus, causing vomiting and diarrhoea, spread very easily through food, hands and surfaces, and restaurants are classic outbreak settings.
• Respiratory viruses such as RSV and influenza, spreading easily in crowded lunch-hour food courts.

Moulds

• Damp lower walls, the undersides of counters, plywood cabinets and padded seats can grow mould within days, smelling musty and potentially contaminating food preparation areas.

Restaurant customers include young children, the elderly, pregnant women and people with chronic illness, who can become seriously ill. Staff with diarrhoea, vomiting or fever should stop handling food and see a doctor. Anyone with high fever and calf pain after wading should go to hospital and mention flood exposure. Disinfecting the premises reduces risk; it does not treat illness.

Pain Points for Restaurant and Food Court Owners

Every closed hour is lost income

Ingredients, wages and rent run every day. Opening one day late can mean wasted stock and customers who move to a competitor.

Large dining areas, lots of furniture

Food courts have many tables, chairs, barriers, tray return points, bins and hand basins. Wiping each one by hand takes too long to make the next service.

Reputation is everything

In provincial towns, people know each other and talk fast. One photo in a local group can quiet a shop for a week, and a case of food poisoning would do far more damage.

Food sanitation standards

Restaurants and food courts are overseen by local food sanitation officers. After a flood, being able to show systematic cleaning and disinfection, with dates and products recorded, really helps.

Limited staff

Staff are often dealing with flooding at home too, so cleaning labour shrinks just when it is most needed.

Rats and insects follow

After floods, rats, cockroaches and flies come looking for food and shelter. Premises left with residue for long attract them.

Why Mopping and Hand Pumps Fall Short in Large Restaurants

Mopping is essential, but it only cleans the floor, not table legs, chair legs, lower walls or the space under counters. Hand-pump sprayers also struggle in a large hall.

• Too slow. A hall with dozens of tables means walking and pumping point by point.
• Coarse, wet spray. Large droplets leave floors wet and slippery and need wiping again, which does not suit a space that must open within hours.
• Hard-to-reach gaps. Under tables, behind cabinets and in wall corners are hard to cover evenly.
• Inconsistent results. Coverage depends on how tired the operator is.

Ordinary floor cleaner and air freshener do not disinfect; they only mask smells for a while. Restaurants with wide dining areas need a tool that sends disinfectant mist across the whole hall quickly, after the floor has been washed.

The Answer for Restaurants and Food Courts: SOLO PORT 423 Backpack Mistblower

The SOLO PORT 423 is a backpack mistblower from SOLO Kleinmotoren GmbH in Germany. A two-stroke petrol engine drives a powerful fan that carries the solution as mist across the area, so one operator can move from the dining hall to corridors, toilets and the back yard without stopping. WHD lists uses including food preparation areas, malls, schools and factories. World Health Disinfection (WHD) sells this model.

Key specifications, according to manufacturer SOLO

According to WHD's product information, the machine produces ULV-type droplets below 30 microns, which saves chemical and keeps floors less wet; actual droplet size depends on the nozzle and setting. WHD also lists MAHLE parts, a BING carburettor, a Nikasil cylinder, a long nozzle with a wide-angle diffuser, a rotatable spray tube, a UV-resistant translucent tank with a wide filler, a one-hand control lever, a padded harness and four anti-vibration mounts. Ask the dealer about optional kits in the SOLO range.

Not a thermal fogger

Many owners have seen the thermal foggers municipalities use against mosquitoes, which make white smoke with heat. The SOLO PORT 423 is a different type: it uses air flow without heat to carry droplets, so it suits disinfectant on restaurant surfaces. For dedicated mosquito and insect equipment, see WHD's mosquito and pest control equipment centre.

In restaurants, the chemical must suit food areas

The sprayer spreads the solution; the product does the disinfecting. In restaurants, choose a registered disinfectant whose label allows use in food-related areas, and follow its concentration, contact time and any requirement to rinse food-contact surfaces with clean water. One product WHD sells is Chemgene HLD4H, to be used strictly according to its label and safety data sheet. Always remove mud and grease first, then disinfect.

10 Reasons Restaurants and Food Courts Should Own a SOLO PORT 423

1. Ready for the next service. Up to 1,400 m³/h of air flow, according to SOLO, lets mist cover a dining hall quickly.
2. Reaches table legs, under counters and lower walls. About 12 m of horizontal reach and a rotatable spray tube get mist where mops cannot.
3. Less wet than hand pumps. According to WHD, fine ULV-type droplets reduce pooling on floors.
4. 12-litre tank. Continuous spraying across a food court with fewer refills.
5. Works before power is restored. Some shops wait for an electrician after a flood; a petrol engine runs immediately.
6. One person can do it. Suits small teams and food courts with few cleaners.
7. Shareable. A food court or a group of shops on one street can buy one machine and share it.
8. Useful all year. Beyond floods, it supports routine disinfection rounds with the chemical you choose.
9. Helps keep pests away. Once residue is cleaned and the area disinfected, there is less to attract rats and insects.
10. Customer confidence. A posted cleaning and disinfection notice brings regulars back sooner. See the SOLO PORT 423 product page.

Before and After: Restoring a Food Court After Town-Centre Flooding

These points illustrate the example case and are not measurements. Real times depend on shop size and chemical.

Step-by-Step: Disinfecting Restaurants and Food Courts After a Flood

Step 1: Electrical and gas safety

Switch off breakers for flooded sections, close all gas valves, and have a technician check sockets, wiring, stoves and fridges before use.

Step 2: Sort food and ingredients

Throw away any food, ingredients or condiments that touched floodwater or sat in a fridge without power for too long. Food poisoning risk is not worth the cost of the stock.

Step 3: Remove dishes and utensils from the spray area

Move usable plates, bowls, glasses, cutlery and kitchen tools into a closed area or cover them completely. Wash any that touched floodwater with dish detergent, sanitise them by a method suited to the item, and let them dry.

Step 4: Wash off mud, grease and rubbish

Sweep out water and debris, wash floors with clean water and detergent, scrub table legs, chair legs, lower walls, floor drains and the grease trap, and lift drain grates to clean underneath.

Step 5: Prepare the chemical and the machine

Choose a registered disinfectant labelled for food-related areas, mix at the label rate, fill the 12-litre tank of the SOLO PORT 423, check fuel according to the manufacturer's manual, and refuel outdoors with the engine off and cool.

Step 6: Spray the dining hall

Clear everyone out and open doors and windows. Start at the far end and back out toward the exit, focusing on table legs, chair legs, lower walls where water reached, barriers, bins and tray return points. Leave the surfaces wet for the label contact time.

Step 7: Toilets, corridors and back of house

Toilets, hand basins, rear corridors, storerooms and bin areas are where drain water entered most. Cover them fully and leave for the contact time.

Step 8: Kitchen and food-contact surfaces

Spray kitchens only if the product label permits, with no open food or utensils present. After the contact time, rinse chopping boards, prep counters and food-contact surfaces with clean water if the label requires.

Step 9: Ventilate, inspect and record

Ventilate for the label time, check floors are not slippery and no residue remains, record date, zone, product and operator, post a notice for customers, and plan a repeat round if heavy rain continues.

Safety When Using a Backpack Mistblower in a Restaurant

• Hearing protection. Sound pressure at the operator is 97 dB(A), according to SOLO. Wear ear muffs or plugs, and spray outside opening hours to avoid disturbing customers and neighbours.
• Limit continuous operation. Engine vibration tires hands and arms; rest and rotate operators.
• Chemical PPE per label. Chemical-resistant gloves, goggles or a face shield, a suitable respirator, long sleeves or coveralls, and non-slip boots, as the label and safety data sheet require.
• Safe refuelling. Engine off and cool, outdoors, away from stoves, gas and any flame.
• Mind the weight. It weighs 11.0 kg dry and about 23 kg or more with a full tank. Adjust the harness and have someone help lift it.
• No people or animals in the spray zone. Customers, unprotected staff and pets must stay out. Never spray toward people.
• Wait for re-entry. Open only after the label re-entry time and ventilation.
• Train users. Operators should learn starting, nozzle adjustment, emergency stop and cleaning after use.

Buy Your Own or Hire a Service

For food courts, large restaurants or groups of shops in streets that flood often, owning a SOLO PORT 423 means disinfecting right after every flood without waiting. Government and school canteens can procure it as equipment. WHD can prepare product details and a quotation. WHD does not list a price online; request a quote at 065-556-6294 or LINE @whd268.

If you are not ready to buy, or want professionals for the first round, you can hire WHD's disinfection spraying service separately. It is a different option from owning the machine.

For other angles on the same machine, read SOLO Port 423 against dengue for municipalities and SOLO Port 423 against emerging disease for provincial public health.

Frequently Asked Questions

1. What is the SOLO PORT 423 price?

WHD does not publish a price; it depends on quantity and order terms. Request a quotation at 065-556-6294 or LINE @whd268.

2. How should a flooded restaurant be cleaned before reopening?

Check power and gas, discard food that touched floodwater, store dishes, wash off mud and grease, spray a disinfectant suited to food areas, wait for the contact time, rinse food-contact surfaces per the label and ventilate before opening.

3. Can I spray disinfectant in the kitchen?

Only if the product label allows use in food-related areas, with no open food or utensils present, and with food-contact surfaces rinsed as the label requires.

4. The water was only 20 cm deep. Do I still need to disinfect?

Yes. Urban standing water usually comes from drains, so even shallow water leaves sewage germs on floors, table legs and lower walls.

5. What is the difference between a mistblower and a thermal fogger?

A thermal fogger uses heat to make smoke; a mistblower such as the SOLO PORT 423 uses air flow without heat, which suits disinfectant on surfaces.

6. Can I open right after spraying?

No. Wait for the label contact and re-entry times, ventilate, and rinse food-contact surfaces where required.

7. Is one machine enough for a large food court?

It depends on area and time available. The 12-litre tank and about 12 m reach, according to SOLO, let one person spray continuously; ask WHD to assess how many you need.

8. Which disinfectant should a restaurant use after a flood?

A registered disinfectant suited to food areas, such as Chemgene HLD4H from WHD, used strictly per label and SDS.

9. Is it loud enough to bother neighbours?

Sound pressure at the operator is 97 dB(A), according to SOLO, so spray at reasonable hours and always wear hearing protection.

10. What if I am not ready to buy?

Hire WHD's disinfection spraying service separately by phone or LINE.

Reopen Your Restaurant With Confidence

Heavy rain in 2026 (B.E. 2569) has forced restaurants in many towns to close for a while. Those that clean and disinfect systematically reopen sooner and keep customer trust. The SOLO PORT 423 helps your restaurant or food court do that work itself, in the limited time you have.

View SOLO PORT 423 details and request a price

Call 065-556-6294 or add LINE @whd268 for a quotation, details or a demonstration.

Related Reading and References

• SOLO Port 423 for dengue control, municipalities
• SOLO Port 423 for emerging disease, provincial public health
• WHD disinfection service
• MGR Online report on central Chai Nat flooding, 25 Sep 2026
• Government PR Department flood summary, DDPM data 7 Oct 2026
• CDC flood cleanup guidance

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Keywords: backpack mistblower, SOLO PORT 423, SOLO PORT 423 price, backpack sprayer, disinfection sprayer, restaurant disinfection after flood, food court disinfection, commercial kitchen flood cleanup, Chai Nat flood 2026 (B.E. 2569)