Flooding on Road Chor Chor 4023, Chachoengsao, 2026 (B.E. 2569): Transport Routes Cut

According to Manager Online, on 6 October 2026 (B.E. 2569) the Department of Rural Roads reported that six of its routes in Chachoengsao were flooded. Road Chor Chor 4023, running through Ratchasan, Bang Khla and Khlong Khuean, had water 80 cm deep, and 50 cm in some sections. Other routes were also affected, including Chor Chor 4049 at 60 cm and Chor Chor 3003 at 50 cm. The department deployed trucks to carry residents through the flooded stretches (source: Manager Online).

Nationally, the Department of Disaster Prevention and Mitigation reported as of 06:00 on 7 October 2026 (B.E. 2569) that 27 provinces plus Bangkok were affected, covering 123 districts and 984 subdistricts, with 1,154,875 households and more than 3.1 million people affected (source: Government Public Relations Department).

For a warehouse business, a road under knee-to-waist-deep water means trucks cannot get in or out and delivery rounds are postponed. Once the water starts to fall, operators race to reopen because downstream customers are waiting. But reopening without proper cleaning and hygiene puts the remaining stock at risk of further contamination.

Example Case: A Distribution Centre Near the Bang Khla Route

This is an illustrative example case based on situations commonly found in flooded warehouses. It does not refer to any specific operator.

Somsri manages a consumer-goods distribution centre of several thousand square metres not far from the route linking Bang Khla district. While the road was under water, the company's tractor units and six-wheel trucks could not move for days. All the team could do was lift stock onto upper racking and stack sandbags at the dock doors, but water still seeped in and covered the floor up to the bottom row of pallets.

When the water receded, the scene was familiar: bottom-row cartons had collapsed, wooden pallets had turned dark, a thin layer of mud covered the entire concrete floor, tide marks climbed the rack uprights, and, most worrying of all, rat droppings had appeared in corners and under the racking, a sign that animals fleeing the flood had moved in. A major customer emailed to ask when shipments would resume and what hygiene measures were being taken.

Somsri's team is about ten warehouse staff and forklift drivers. They have brooms, squeegees, one pressure washer and a small hand-pump sprayer. She knows the mud can be cleared, but spraying disinfectant evenly across the whole floor, several levels of high racking, the loading docks and every forklift with a hand pump would take so long that reopening would slip by days.

Which Germs Linger in a Warehouse After a Flood?

Warehouses have features that make it easy for germs to persist: wide floor areas, high ceilings, poor airflow when doors are shut, and large amounts of absorbent material such as cardboard and timber. Floodwater that has flowed across roads, canals and nearby communities leaves several groups of germs behind.

• Bacteria such as E. coli from sewage-contaminated water, Salmonella, which causes food poisoning, and Leptospira, the cause of leptospirosis. Leptospirosis is a particular risk in warehouses because rats escaping floods often shelter in buildings with tall stacks and hiding places. Rat urine mixed into water and mud can enter workers' bodies through cuts on hands or feet.
• Viruses such as norovirus and rotavirus, which cause diarrhoea and spread easily via hands that touch contaminated surfaces, plus respiratory viruses like influenza and RSV that spread in shared spaces such as break rooms and the warehouse office.
• Molds that grow very quickly on cardboard, wooden pallets, product labels and damp walls, producing musty odours that can seep into the packaging of stock that never got wet and aggravate staff allergies.

The risk in a warehouse therefore has two layers. The first is the health of staff who lift, move and touch surfaces all day. The second is the quality of undamaged goods, which can pick up contamination or odour from their surroundings. If the warehouse stores food or personal-care products, customers expect even higher standards.

To be clear, the disinfecting effect comes from the disinfectant, not the sprayer. The machine spreads the product evenly. Use a properly registered disinfectant according to its label, such as Chemgene HLD4H disinfectant sold by WHD, and always clear mud before spraying.

The Pain Points for Warehouse Operators After the Water Falls

Wide and tall spaces. A typical warehouse has multi-level racking, aisles tens of metres long and large open areas. Disinfection is not only horizontal; you also have to think about uprights, pallet beams and interior walls well above head height.

Time is money in logistics. Every day a warehouse stays closed means backlogged deliveries, contractual penalties and possibly the cost of renting backup space. Any step that can be speeded up has real value.

Good stock must be protected. Goods on upper levels that stayed dry still need a clean environment. If humidity and mold are allowed to spread, losses grow well beyond the original flood damage.

Customer and auditor confidence. Large brand owners, especially in food, beverages and pharmaceuticals, often ask for evidence of systematic cleaning and disinfection before they send stock back.

Staff worry about leptospirosis and mold. When workers see rat droppings and mold on the racking, concern follows. Without clear measures, sick leave and absences may rise just when labour is needed most.

Next rainy season will come. Low-lying land along the Bang Pakong River may flood again. Equipment bought once and used for years is better value than improvising every time the water rises.

Why Mops, Hand Pumps and Pressure Washers Are Not Enough

Basic cleaning tools play an important role in mud removal, but at the disinfection stage the following limits make the job slow and patchy.

• Mops and squeegees only work on floors. They cannot clean rack uprights, pallet beams or high interior walls.
• Hand-pump sprayers have short reach and coarse droplets, need frequent pumping, and force the operator into every bay. In aisles tens of metres long, the job drags on and tired operators spray unevenly.
• Pressure washers clean well but are poor for applying disinfectant: they use so much water that the product is diluted, and overspray can soak good stock on the racks.
• Extra labour helps a little, but workers are scarce during floods, and more people without better tools does not raise standards.

A warehouse needs a tool that throws disinfectant mist a long way, covers both long aisles and tall racking, uses chemical economically without flooding the floor, and lets a small team finish quickly.

Many people assume a disinfection machine must be a "thermal fogger". In fact, a thermal fogger uses heat to turn liquid into fog, while the SOLO PORT 423 is a mistblower that uses air from an engine-driven fan and no heat. They are different tools, and the mistblower is well suited to applying disinfectant onto racking, floors and walls.

The Answer for Warehouses: the SOLO PORT 423 Backpack Mistblower

The SOLO PORT 423 is a backpack mistblower made by SOLO Kleinmotoren GmbH in Germany. A single-cylinder two-stroke engine drives a high-volume fan that breaks the liquid into fine mist and carries it a long way. The main specifications are:

For warehouses, airflow and reach matter most. Strong air lets an operator stand in the main aisle and send disinfectant mist onto uprights and pallet beams deep in each bay, without climbing or squeezing into every slot. The rotatable spray tube makes it easy to aim upward. Fine ULV-type droplets, according to WHD product information, coat surfaces thinly without dripping onto stock or leaving puddles that make forklifts slip; actual droplet size depends on the nozzle and settings.

According to WHD product information, the unit also has a 1.4 L fuel tank, a BING float carburettor, electronic ignition, a Nikasil cylinder, MAHLE components, a long nozzle with a wide-angle diffuser, a translucent UV-resistant tank that shows the liquid level clearly, a one-hand control lever, a padded harness and four-point anti-vibration mounts. That suits continuous walking work down long aisles. For other optional accessories, ask the dealer directly.

10 Reasons Warehouses Should Own a SOLO PORT 423

1. Long reach for long aisles. About 12 m of horizontal reach, according to SOLO manufacturer data, covers the space between racks quickly.
2. Mist up to high racking. 1,400 m³/h of airflow, according to SOLO manufacturer data, carries disinfectant up to uprights and beams above arm height.
3. Good stock stays dry. Fine ULV-type droplets, according to WHD product information, coat surfaces lightly instead of drenching them.
4. Reopen sooner. Fewer people cover more area, so you can plan the restart of shipments with confidence.
5. Works before power is restored. The built-in engine needs no sockets in a building still waiting for an electrical check.
6. Loading docks and outdoor areas too. Treat truck yards, dock ramps and perimeter fences where mud lies thick.
7. Routine warehouse sanitation. Beyond floods, use it on a schedule for break rooms, toilets and goods-in areas.
8. Evidence for customers. With your own machine you can set a standard procedure, log each treatment and send photos to stock owners.
9. German engine durability. MAHLE and BING parts and a Nikasil cylinder, according to WHD product information, are built for heavy use.
10. Buy and get advice locally. Ask about specs and use, and request a SOLO PORT 423 quotation directly from WHD.

Before and After: Changing How a Warehouse Disinfects After a Flood

Step by Step: Disinfecting a Warehouse After the Flood

1. Check building safety. Have an electrician inspect and isolate wet zones, check rack stability, especially uprights that stood in water, and watch for stock that could fall from height.
2. Remove damaged goods. Take out wet stock, collapsed cartons and waterlogged pallets. Photograph and list everything for insurance and stock owners.
3. Protect good stock. Move undamaged goods to a safe zone or cover them completely with plastic sheeting before washing and spraying.
4. Clear mud and rodent traces. Sweep and wash mud from floors, walls, docks and rack bases. Wet rat droppings thoroughly with disinfectant before picking them up; never dry-sweep, which can raise contaminated dust. Always wear gloves and a mask.
5. Dry out. Open every dock door and use large fans to speed drying and limit mold growth.
6. Prepare disinfectant and machine. Choose a registered disinfectant whose label allows spraying, dilute as directed, refuel only with the engine off and cool, and put on full PPE.
7. Spray from the back toward the doors. Start in the deepest zone, spray top to bottom so mist coats uprights, beams, floors and walls, then work back toward the docks. Never spray into electrical cabinets or control panels.
8. Treat forklifts and handling equipment. Clean mud off forklifts, pallet jacks and trolleys first, then spray or wipe with disinfectant as suits the materials.
9. Treat outdoor and staff areas. Truck yards, ramps, break rooms, toilets and the warehouse office are heavily shared and need full coverage.
10. Contact time, ventilation, records. Leave the product on for the label contact time, wait out the re-entry period, then log date, zone, product and operator before returning stock to the racks.

Planning the Disinfection Day: A Practical Example

A simple plan keeps the work moving and keeps staff safe. In the morning, the warehouse team finishes mud removal in one zone while the electrician checks the next. Around midday, once the first zone is dry enough, a trained operator starts spraying at the back wall and works toward the docks while a second person controls access and keeps forklifts away. Operators swap every agreed interval to manage noise and vibration exposure, and the person not spraying refills the tank with the engine off and cool, outdoors. In the afternoon, the treated zone is left closed for the contact time and re-entry period on the label while the team moves on to the next zone. At the end of the day, the supervisor updates the spray log with zones, product, dilution and operators and sends a short photo report to stock owners. Repeating this cycle zone by zone turns a chaotic clean-up into an orderly, documented process.

Safety When Using a Backpack Mistblower in a Warehouse

• Hearing protection. 97 dB(A) at the operator, according to SOLO manufacturer data. Wear earmuffs or earplugs every time, especially inside enclosed buildings where sound reflects.
• Limit continuous use. Vibration is up to 6.3 m/s², according to SOLO manufacturer data. Rotate operators and take breaks.
• Chemical PPE. Follow the disinfectant label and SDS: chemical-resistant gloves, goggles or face shield, a suitable respirator, long sleeves and boots.
• Refuel correctly. Engine off and cool before refuelling, outdoors, away from sparks and flammable stock.
• Weight when full. About 11 kg empty and roughly 23 kg or more with a full 12 L tank. Fit the harness snugly and watch for floors still slippery with mud.
• Keep people and animals out of the spray zone. Stop goods movement in the zone being sprayed, keep forklifts and staff out, never spray toward people or into the wind.
• Follow re-entry times on the disinfectant label and ventilate well before staff return.
• Train operators in starting, dosing, emergency stop and cleaning the machine after use, following the manufacturer's manual.

Staff who waded through water or cleared mud and then develop high fever, headache, calf pain, red eyes or diarrhoea should see a doctor and mention flood exposure, as these can be signs of leptospirosis or other infections. Disinfection reduces environmental risk only; it never replaces medical treatment.

Own a Machine or Hire a Disinfection Service?

Large warehouses, multi-building sites or operators with several branches in low-lying areas gain the most from keeping a SOLO PORT 423 on hand. They can start as soon as the water drops, avoid waiting for service providers during province-wide demand, and use the machine for routine sanitation all year.

Smaller warehouses, or businesses that prefer experts to handle everything, can use WHD's disinfection spraying service, a separate offering in which the team brings its own equipment and products, or combine both options depending on the scale of each event.

Frequently Asked Questions

How do I disinfect a warehouse after a flood, and where do I start?

Check electrical and racking safety, remove damaged stock, clear all mud, dry the building, then spray a registered disinfectant according to its label.

What is the SOLO PORT 423 price and how do I get a quote?

WHD does not list a price online. Request a quotation on 065-556-6294 or LINE @whd268, and the team will advise on use for your warehouse size.

Can a mistblower reach high racking?

Up to 1,400 m³/h of airflow, according to SOLO manufacturer data, plus a rotatable tube, carries mist to uprights and beams far better than a hand pump. Actual height depends on layout and settings, so trial a sample zone first.

Will stock on the racks get wet?

Fine ULV-type droplets, according to WHD product information, reduce dripping and pooling, but always move or cover good stock before spraying and pick a suitable disinfectant.

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

A thermal fogger uses heat to create fog. The SOLO PORT 423 uses air from an engine fan to create mist with no heat, which suits applying disinfectant onto surfaces.

There are rats in our warehouse after the flood. What should we do?

Wear gloves and a mask, soak droppings with disinfectant before removal, never dry-sweep, then seal entry points and plan pest control with a specialist. Staff with fever or calf pain should see a doctor.

Which disinfectant should a warehouse use?

A registered product whose label allows spraying, such as Chemgene HLD4H sold by WHD, used exactly as labelled. Food warehouses should also check food-contact surface requirements.

How heavy is the backpack sprayer and how long can it be used?

About 11 kg empty, according to SOLO manufacturer data, and roughly 23 kg or more when full. Because of noise and vibration, limit continuous use and rotate operators.

Is there a warehouse disinfection service if we do not buy?

Yes. WHD's disinfection spraying service is a separate offering using its own equipment. Contact the same phone number and LINE account.

Reopen Your Warehouse Faster After the 2026 (B.E. 2569) Floods

Get advice on the right backpack mistblower and disinfectant for your warehouse, and request a quotation.

View SOLO PORT 423 and Request a Price

Call 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
• WHD disinfection spraying service
• Chachoengsao rural road flooding, 2026 (B.E. 2569): Manager Online
• National flood summary, 2026 (B.E. 2569): Government Public Relations Department
• Flood cleanup guidance: CDC