The Ban Pho, Chachoengsao Flood of 2026 (B.E. 2569)

According to Daily News (dailynews.co.th), continuous heavy rain fell over Mueang Chachoengsao and Ban Pho districts on 2 to 3 October 2026 (B.E. 2569). Along Soi Ban Don Sai to Nong Wiang 1, Moo 2, Don Sai subdistrict, Ban Pho, floodwater was more than 1.50 metres deep. Rescuers used a boat to help an 80-year-old woman who had been stranded in her house for four days, and moved 18 cats up onto the roof. They also found electrical leakage in front of the house and many leeches in the water.

These details paint the picture that cleaning and pest control crews face when they enter a property after the water drops: homes soaked for days, many pets, potentially dangerous electrics and creatures carried in by the flood. The job is never just spraying. It means assessing risk, planning and working safely.

Nationally, the Government Public Relations Department (PRD), citing the Department of Disaster Prevention and Mitigation as of 06:00 on 7 October 2026 (B.E. 2569), reported flooding in 27 provinces plus Bangkok, across 123 districts, 984 subdistricts and 1,154,875 households, with more than 3.1 million people affected (prd.go.th). For service businesses, that is an enormous wave of cleaning and disinfection demand arriving all at once.

Example Case: The Phone That Would Not Stop Ringing at a Small Pest Control Firm

Note: this is a typical scenario compiled from situations commonly seen in service businesses after floods. It does not describe any real person or company.

Ek owns a small termite and pest control company in eastern Thailand, with six technicians and two pickup trucks. Normal work is termite treatment in housing estates, mosquito spraying at resorts and rodent baiting in restaurants. Three days after the water fell, the company's LINE account is flooded with messages: homeowners asking whether he does post-flood disinfection, shops wanting to reopen as soon as possible, a warehouse that needs disinfection before restocking, and a housing estate committee wanting the common areas of the whole project treated.

The trouble is that Ek's team has only hand pump pressure sprayers and an electric pump sprayer that needs a socket. One warehouse takes almost a full day, and in many homes the power is still off or there is a leakage point where no technician wants to plug anything in. Every day he turns down several jobs, and some customers go to a competitor who can respond faster.

Ek realises the opportunity does not depend on headcount alone. It depends on tools that let each technician do more work, without mains power, with results customers can see are professional. That is why many providers start looking at an engine-powered backpack mistblower such as the SOLO PORT 423.

Why Post-Flood Customers Need Wide-Area Disinfection

Floodwater that sits in homes and buildings for days carries contamination from drains, septic tanks, animal pens and rubbish into every corner. When it recedes, it leaves mud, moisture and odours that harbour several groups of germs:

• Bacteria such as E. coli and Salmonella from sewage and wastewater, plus the risk of leptospirosis from Leptospira bacteria in standing water and mud, a direct risk for technicians who wade in to work.
• Viruses such as norovirus and rotavirus that cause diarrhoea, and influenza and RSV, which spread easily when families move back into damp homes.
• Moulds on walls, ceilings, wooden cabinets, mattresses and curtains, causing musty smells and allergies.

Pests usually follow as well: mosquitoes breeding in standing water, cockroaches, and rats that fled the water into houses. These are jobs pest control companies already know well, so adding post-flood disinfection is a natural extension of existing expertise.

What a professional must make clear to the client from the start is that cleaning comes before disinfection. Mud must be removed and surfaces washed and dried, then a registered disinfectant is applied according to its label. The sprayer gets the product onto every surface quickly, but germ-reducing performance depends on the disinfectant. Being honest about this builds more trust than overpromising. And if a client or technician develops fever, calf pain or diarrhoea after wading through floodwater, advise them to see a doctor immediately.

The Pain Points for Service Providers After the Water Recedes

More work than you can take. Demand rises across the whole district at once while technicians and equipment stay the same. Every job you turn down is lost revenue and a lost long-term customer.

Existing tools are too slow. Hand pumps are fine for spot termite work but not for disinfecting warehouses, factories or estate common areas covering thousands of square metres.

Power is unreliable. Many homes still have no electricity or have leakage points, as the news report showed. Electric sprayers put both technicians and client property at risk.

Crew fatigue. Technicians do several properties a day, wading through mud, lifting items and spraying in hot, humid air. If the tool does not reduce effort, the crew tires and the injury risk rises.

Professional image. Clients compare several providers at the same time. A crew that arrives with standard equipment, full PPE and a clear explanation of the process wins trust and referrals.

Safety and legal exposure. Misusing chemicals, spraying people or pets, or ignoring the label can cause harm and complaints. A company needs clear standard procedures.

Why Hand Pumps and Electric Sprayers Fall Short for Flood Work

• Hand pump sprayers need constant pumping, produce coarse droplets and have short range, so technicians must approach every wall and use more product than necessary.
• Electric pump sprayers depend on a socket, which in freshly flooded areas is often unavailable or carries a leakage risk.
• Pressure washers remove mud well but are not designed to spread disinfectant as a thin mist, and the spray can splash dirt around.
• Thermal foggers suit outdoor mosquito work but are not the main choice for applying water-based disinfectant to surfaces in homes and warehouses.

Providers need a machine that makes fine mist, throws it a long way, runs without mains power, stands up to daily heavy use and lets one technician finish a property fast enough to take the next job the same day.

The Answer for Service Providers: The SOLO PORT 423 Backpack Mistblower

The SOLO PORT 423 is an engine-powered backpack mistblower from SOLO Kleinmotoren GmbH, Germany, a maker whose mistblowers are used for pest control, agriculture and plant care. The engine drives a fan that creates a strong air stream; liquid from the tank enters that stream at the end of the tube, breaks into fine mist and is blown far ahead. A technician can stand in one place and cover a whole room or warehouse bay.

World Health Disinfection (WHD) sells this unit and lists homes, food preparation areas, public areas, vehicles, factories and shopping malls among its uses on the product page, matching the job types cleaning and pest control contractors meet every day.

Key specifications, according to SOLO (manufacturer data)

• Single-cylinder 2-stroke engine, 72.3 cm³
• Power 3.0 kW (4.1 HP)
• Spray liquid tank 12 L
• Maximum air flow 1,400 m³/h
• Horizontal reach about 12 m
• Dry weight about 11.0 kg
• Sound pressure at the operator 97 dB(A)

According to WHD's product information, the unit produces ULV-type droplets below 30 microns that save chemical, and has a 1.4 L fuel tank, a float carburettor, electronic ignition, a Nikasil cylinder, a wide-mouth UV-resistant translucent tank, a one-hand control lever combining throttle, dosing and stop, a padded harness and 4-point anti-vibration mounts. Actual droplet size depends on the nozzle and settings.

Standard equipment includes an adjustable misting nozzle, a long-reach nozzle, a wide-angle grille and a deflector screen, and the tube rotates. Technicians can adapt it to small rooms in a house, high-ceilinged warehouses, or the lawns and car parks of a housing estate. Ask WHD about any other optional kits in the SOLO range before ordering.

Not a thermal fogger

Many clients call every machine a "fogger", but the SOLO PORT 423 does not use heat to turn liquid into smoke. It uses air power to break the liquid into mist, which suits water-based disinfectants on surfaces in homes, shops and warehouses. Explain this to clients so they do not expect white smoke that is not needed for disinfection.

10 Reasons Pest Control and Cleaning Companies Should Own a SOLO PORT 423

1. More jobs per day. An air flow of 1,400 m³/h (manufacturer data) lets one technician cover large areas far faster than a hand pump.
2. Works without power. The engine means no sockets in homes that are still cut off or have leakage points.
3. 12 L tank. Fewer refills and fewer trips back to the truck.
4. About 12 m of reach. Suits high warehouses, garages and estate common areas.
5. Fine mist, lower chemical cost. According to WHD, droplets below 30 microns reduce product per job and avoid soaking the client's home. See the product details
6. Disinfection and pest work. Switch between registered products for each job per their labels, rinsing the tank and tube thoroughly before changing products.
7. German build for heavy use. According to WHD, quality components and a Nikasil cylinder suit daily work.
8. Less technician fatigue. No pumping, plus a padded harness and anti-vibration mounts.
9. A professional image. Standard equipment reassures clients and drives referrals. Request a quote
10. Recurring service revenue. After floods, many clients want disinfection and pest control rounds throughout the rainy season.

Before and After: One Warehouse Disinfection Job

Standard Procedure for a Post-Flood Disinfection Crew

1. Take the job and assess the site. Ask about floor area, flood depth, days under water, vulnerable occupants and pets. Request photos or video before going in.
2. Check electrical safety. Have the client or an electrician cut and inspect the power first. Never touch wet plugs or cables. The leakage found in the Ban Pho report is a clear reminder.
3. Watch for flood-borne creatures. Wear tall boots and long sleeves and trousers against leeches, venomous animals and sharp debris hidden in mud.
4. Move people and pets out. Arrange for residents, elderly family members and pets to leave before work starts and stay out until the label's re-entry time has passed.
5. Clean first. Remove mud and damaged items, wash surfaces with clean water and detergent, and ventilate to dry. If the client has already cleaned, inspect before spraying.
6. Choose and prepare the disinfectant per its label. Use a registered product such as Chemgene HLD4H at the stated dilution, never mix it with other chemicals, and rinse the sprayer tank if it last held an insecticide.
7. Close the area and suit up. Close doors and windows as appropriate, post warning signs and make sure every technician wears PPE per the label and SDS.
8. Spray from the far end toward the exit. Treat walls top to bottom, then furniture and floors. Use the wide-angle grille in rooms and the long-reach nozzle in warehouses or yards, with low output near electrical fittings.
9. Allow contact and ventilation time. Leave the product for the label's contact time, then ventilate before handing over.
10. Hand over with a report. Tell the client which product was used, which zones were treated, when they can go back in, and how to maintain the space, such as ventilating and wiping high-touch points regularly.
11. Clean the machine after the job. Rinse the tank and tube with clean water per the manual and check filters and nozzles so the unit is ready for the next call.

Technician Safety: Standards Clients Can See and Should See

• Hearing protection. Sound pressure at the operator is 97 dB(A) according to SOLO. Technicians who spray several jobs a day must always wear ear muffs or plugs to prevent long-term hearing loss.
• Limit continuous operating time. The engine vibrates. Even with anti-vibration mounts and a padded harness, rotate technicians and rest between jobs.
• Chemical PPE per the label and SDS. Chemical-resistant gloves, goggles or a face shield, a respirator suited to the product, long sleeves or coveralls, and tall boots that also protect against leeches and sharp objects.
• Refuel safely. Switch off and let the engine cool before refuelling, outside the house or beside the truck, away from sparks and flames.
• Mind the weight. About 11 kg dry and roughly 23 kg or more with a full 12 L tank. Take care on slippery mud and stairs.
• No people or animals in the spray zone. Never spray toward people and never spray while residents or pets are in the room. In homes with many cats or dogs, move them somewhere safe first.
• Re-entry times. Tell the client in writing when they can return, based on the disinfectant label.
• Train the team. Every new technician must learn to start, dose, stop and maintain the unit, and read the manufacturer's manual before real jobs.

Typical Post-Flood Jobs and How to Set Up the Machine

Detached houses and townhouses. Rooms are small and full of furniture, so fit the wide-angle grille, keep the output low and work room by room, starting upstairs if water reached the upper floor and finishing at the front door. Pay extra attention to kitchens, bathrooms and the space under stairs.

Shophouses and small shops. Owners want to reopen fast. Agree a time window outside trading hours, clear stock off the floor, and treat shelving, counters and walls before the floor. Hand over with a written re-entry time so the owner can plan opening.

Warehouses and garages. High ceilings and long bays suit the long-reach nozzle. Walk the aisles in one direction and keep goods covered or moved, following the label.

Housing estate common areas. Clubhouses, guard posts, rubbish points and playgrounds can be done on a schedule agreed with the estate committee, outdoors always spraying with the wind and keeping residents and pets away.

A Business Investment: From One Machine to a New Service Line

For pest control and cleaning firms, a backpack mistblower is not just a tool but a way to raise crew productivity. When each technician works faster, the company accepts more jobs without hiring immediately, and can offer new packages: post-flood washing and disinfection, monthly common-area disinfection for housing estates, or disinfection combined with mosquito control during the rainy season.

A practical start is one or two units for the core team. Train technicians well, build a site assessment form and a handover report, then add machines as real demand grows. Keeping a spare unit during peak season means work does not stop when one machine is in for maintenance.

Do not overlook product choice and compliance. Use only registered products, keep the SDS in the truck, log chemical use on every job, and avoid advertising performance figures that do not come from the disinfectant maker's own data. Working transparently reduces complaints and builds a long-term reputation.

Frequently Asked Questions

1. What is the SOLO PORT 423 price?

It depends on the number of units and accessories. Contact WHD for a quotation on 065-556-6294 or LINE @whd268.

2. Can a backpack mistblower be used for a commercial disinfection business?

Yes. It is built for heavy work and suits providers who treat large areas on several jobs a day, using registered products according to their labels.

3. Can the same machine apply insecticide and disinfectant?

Yes, but rinse the tank, tube and nozzle thoroughly before every change of product, never mix chemicals, and follow each product's label.

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

A thermal fogger uses heat to turn liquid into smoke. The SOLO PORT 423 uses air power to make mist without heat, which suits water-based disinfectants on surfaces.

5. How far does it spray?

About 12 m horizontally according to SOLO, depending on nozzle and wind.

6. Can we work in a house with no electricity?

Yes. It runs on a 2-stroke petrol engine, so no socket is needed. Still have an electrician cut and check the power before entering, for safety.

7. What fuel mix does it use?

Follow the manufacturer's manual and the guidance WHD gives at handover.

8. Is it heavy? Can a technician carry it all day?

About 11 kg dry, roughly 23 kg or more with a full tank. Rotate technicians and rest between jobs.

9. Can clients go back in right after spraying?

No. Wait for the re-entry time on the disinfectant label and ventilate first.

10. Can we buy several units for several crews?

Yes. Contact WHD for a quotation based on the number of units, on 065-556-6294 or LINE @whd268.

Be Ready to Take On More Post-Flood Disinfection Jobs

Crews with good tools respond faster, work more safely and build a stronger reputation. Contact World Health Disinfection for details and a quotation for the SOLO PORT 423.

View the SOLO PORT 423 and Request a Quote

Phone 065-556-6294 | LINE @whd268

Related Reading and References

• SOLO Port 423 backpack mistblower against dengue outbreaks, for municipalities and TAOs (Thai)
• Spraying against emerging diseases with the SOLO Port 423, for provincial public health offices (Thai)
• Chemgene HLD4H disinfectant
• Daily News report on the Ban Pho, Chachoengsao flood, 2 to 3 October 2026 (B.E. 2569): https://www.dailynews.co.th/news/6244181/
• PRD national flood summary as of 7 October 2026 (B.E. 2569): https://www.prd.go.th/th/content/category/detail/id/33/iid/548715
• US CDC, floods and cleanup: https://www.cdc.gov/floods/