Mosquito Fogger Cheat Sheet for Leaders: All 10 Models on One Page, From Thermal Fogging Machines to Indoor ULV and Vehicle-Mounted Sprayers, and Which Job Each One Fits

Leaders do not need to memorize the specifications of every mosquito fogger. They need to answer one question before approving a budget: "Does the machine we are about to buy match the work we actually have to do?" This cheat sheet puts the ten core machines in WHD's government mosquito control range into a single table, grouped into four job types, using catalog facts only and no invented figures, so mayors, chief administrators, directors and public health teams can discuss it at one table in five minutes.

Executive summary (1-minute read)

• Problem: agencies often choose by price or brochure rather than by job, and end up with machines that do not fit their areas.
• Principle: divide the work into four types: outdoor thermal fogging, indoor ULV, backpack work on foot, and vehicle-mounted work along many streets. Then choose within the group.
• 10 models, 4 groups: AT35 (thermal) / U260, MASTER ELECTRIC ULV, U240, AIROSTAR (indoor) / SUPER ROTARY, SOLO PORT423 (backpack) / UM2, UM4, GREENFOG F4 (vehicle).
• Why WHD: ISO and GMP, 100% quality control before delivery, technicians, spare parts and full after-sales service; products meet Thai government equipment standards.
• Next step: print the table, circle the models that fit your work, and ask WHD for quotations and specifications for procurement.

When ten brochures do not help anyone decide

(Illustrative scenario) Khun Thanaphon is chief administrator of a subdistrict with scattered villages among rice fields, a dense community around the market, three schools, a child development center and a health-promoting hospital. After several dengue cases last year, the mayor told him: "Next year we need the right equipment. Give me a one-page summary before the budget meeting next week."

Khun Thanaphon collected nearly ten brochures and product links. Each highlighted something different: engine power, droplet size, certifications. The more he compared, the more confused he became, because he was comparing machines designed for entirely different jobs, like comparing a pickup truck with a motorcycle.

One staff member suggested buying "the two cheapest models" to get more units. Another suggested "the biggest one" to look effective. Nobody started from the question, "What is our work?" What do the classrooms need? The rice fields? The streets around the market?

What he really needed was a one-page table that already grouped machines by job, so the mayor could see the picture in five minutes and the health team could confirm the technical reasoning. This article is that table.

What happens when the machine does not fit the job

Public health

The Aedes mosquito carries dengue, chikungunya and Zika; Anopheles mosquitoes carry malaria in some areas. Dengue brings high fever, headache, pain behind the eyes and muscle aches, and shock must be watched for as fever falls. Children, older adults and people with chronic illness are most at risk. If a machine cannot reach the places that need spraying, or cannot be used indoors, the roughly 100-metre zone around a patient's home goes incompletely covered, and that gap is where transmission continues.

Budget

Machines that do not fit the job are used less, or misused until they break. The money spent does not return full value, and the agency may need to buy another type next year. Choosing correctly the first time is the real saving.

Image and trust

Residents remember the year the agency arrived late, or filled a classroom with thick smoke. Those memories affect confidence in leadership directly.

Complaints

Unsuitable machines, such as heavy smoke in dense neighborhoods without notice or sprayers that cannot reach some lanes, lead to complaints, often followed by "Why did we pay for something we can't use?"

Staff workload

Machines too heavy to carry all day, or needing constant refills over large areas, exhaust teams and reduce output. Matching machine to job also looks after staff.

Terms to know before reading the table

• Thermal fogging machine: uses heat to turn the solution into visible white fog; best for open areas, gardens and around homes.
• Mosquito sprayer (ULV cold fogger): creates droplets without heat; often called cold fogging.
• ULV: Ultra Low Volume, spraying a very small amount as tiny floating droplets.
• Micron: one thousandth of a millimetre, used for droplet size; smaller droplets stay airborne longer.
• Water-based / oil-based: formulations using water or oil as carrier; machines differ in what they accept, and labels must be followed.
• Nozzle: where droplets exit; some vehicle units have several independently controlled nozzles.

Why the usual way of choosing goes wrong

Lowest price only. Non-standard machines without after-sales service may fail mid-season with no parts. The savings become a bigger loss.

One machine for every job. No model suits classrooms, rice fields and main roads at once.

Comparing across groups. Comparing a vehicle unit's power with a handheld unit, or a backpack tank with an indoor tank, does not help. Compare within a group.

Forgetting the operator. A good machine nobody can use, or one too heavy for the team, sits in storage.

Forgetting the chemicals. Some models accept both water- and oil-based products; check that machine and label match what you already buy.

Forgetting after-sales. Nozzles need cleaning and parts wear out. A supplier with technicians and parts matters as much as the machine.

The 10-model one-page table (print or forward)

Every cell is based on WHD product pages only. For further technical detail and prices, request a quotation and specification documents from WHD.

See every model with details and quotation channels at the WHD government mosquito control equipment hub.

Read the table fast: four questions

1. Indoor or outdoor? Classrooms, wards and offices point to group 2; yards and gardens to group 1 or 3.
2. Can a vehicle get in? Narrow lanes, fields and orchards point to group 3; many streets and dense communities to group 4.
3. Power outlets everywhere indoors? If yes, look at the electric U260 or MASTER ELECTRIC ULV, or the light 3.1 kg U240. If not, consider the battery-powered AIROSTAR.
4. How large is the area? Mid-sized communities may start with UM2; wide multi-community areas with UM4 or the 85 L GREENFOG F4.

These four answers narrow the choice to two or three models. Then compare within the group and ask WHD about real-world use.

One sentence per model, for the mayor

If the table is still too much for a busy leader, these ten lines can be read aloud at the start of a budget meeting.

• AT35: the outdoor stainless steel thermal fogger for yards, gardens and public grounds, taking water- or oil-based products.
• U260: the German electric ULV unit with an 800 W motor and 15–30 micron droplets, listed for hospitals and laboratories.
• MASTER ELECTRIC ULV: the 1,400 W indoor unit with a 4.5 L tank, adjustable particle size and CE and ETL marks, for offices and schools.
• U240: the light 3.1 kg German ULV unit with a 5 L tank that accepts water- or oil-based products, ideal as a shared indoor machine.
• AIROSTAR: the cordless battery ULV unit for rooms where no outlet is nearby, running up to about an hour per charge.
• SUPER ROTARY: the compact, cost-effective backpack unit that serves both public health and agriculture.
• SOLO PORT423: the backpack unit with a SOLO engine, 12 L tank and reach of up to 12 m, for lanes where vehicles cannot go.
• UM2: the two-nozzle pickup unit with remote and manual control, a first step into vehicle spraying.
• UM4: the four-nozzle pickup unit with an 18 hp engine and independently controlled nozzles, for wide areas.
• GREENFOG F4: the vehicle unit with an 85 L tank, electric start and remote control, certified by the Department of Medical Sciences, for towns and cities.

Reading these lines together makes the logic obvious: each machine has a home, and a well-equipped agency usually needs machines from more than one group rather than several machines from the same group.

Example starter sets by agency type (guidance, not rules)

Cautions for each group

Group 1, thermal: suited to open areas, but the white fog is highly visible; always notify residents and do not use it as a substitute for an indoor unit in closed rooms used by children or patients.

Group 2, indoor: spray when buildings are empty, close and ventilate as the label directs, and confirm the product supports indoor ULV use.

Group 3, backpack: operators carry the machine for long periods; rotate staff, plan routes and provide full protective equipment.

Group 4, vehicle: you need a compatible vehicle, a driver and an operator, suitable routes and speeds, and advance public notice of routes.

An 8-point checklist before signing

1. Is the proposed model in the group that fits the area's main work?
2. Do we already own this type, and does it still work?
3. Who will operate it, and is training planned?
4. Are chemicals, PPE and maintenance budgeted alongside it?
5. Are our current chemicals compatible with the machine and label?
6. Does the supplier have reachable technicians, parts and after-sales service?
7. Are standards documents complete?
8. Is a public communication plan ready before the first spraying?

Eight yeses make it far more likely the machine will be used well throughout its life and that questions from the council or auditors can be answered with confidence.

What leaders gain

• Faster decisions: every option on one page.
• Public trust: equipment for indoor, outdoor and street work means a complete response when cases appear.
• Fewer complaints: the right machine for each place, such as no thick smoke in classrooms.
• Value for money: buy for real work, avoid duplicate types and repeat fixes.
• Audit-ready procurement: a clear, catalog-based reason for each choice.
• Visible results: a complete toolkit lets teams move fast and report concretely.

For public health teams: technical notes on this table

• Droplet size: U260 and U240 list 15–30 micron, a range commonly used in ULV work to contact flying mosquitoes. For other ULV models, ask WHD for setting guidance.
• Formulations: AT35 and U240 list both water- and oil-based compatibility; for other models check with the supplier and the product label.
• Label first: whatever the machine, use registered public health products at the label rate and method, with recommended PPE.
• Timing: Aedes bite in daytime, especially morning and late afternoon; outdoor thermal fogging is usually done early morning or evening.
• Integrated vector control: spraying reduces adults for a time; combine it with source reduction, community clean-ups and case surveillance.
• No machine kills every insect on its own: the effect on each species depends on the product and label; the machine only creates droplets.
• Maintenance: models the catalog lists with engines (SOLO PORT423, UM4, GREENFOG F4) and electric or battery models (U260, MASTER ELECTRIC ULV, AIROSTAR) need different care; ask the supplier about others and always request manuals and training.

10 reasons to start your search at the WHD equipment hub

1. All four job groups, from the AT35 thermal fogging machine to vehicle units, from one supplier.
2. Several indoor options, electric and battery, including the AIROSTAR for buildings without outlets everywhere.
3. Backpack units for areas vehicles cannot reach: SUPER ROTARY and SOLO PORT423.
4. Vehicle units in several sizes, from two to four nozzles and the 85 L tank of the GREENFOG F4.
5. Clear standards information, such as CE and ETL on MASTER ELECTRIC ULV and Department of Medical Sciences certification on GREENFOG F4.
6. ISO and GMP at the company level, supporting documented procurement.
7. 100% quality control before delivery.
8. Technicians, parts and full after-sales service for every group.
9. Meets Thai government equipment standards.
10. Matching advice by phone at 065-556-6294 or LINE @whd268.

Before and after the one-page table

Procurement tips: from table to specification

Once you have chosen groups and models, turn them into procurement documents for government mosquito control equipment. General tips, adapted to your rules:

• Specify by task, not brand: ULV system, droplet range, power source, tank size, nozzle count, vehicle mounting, keeping competition open.
• Separate line items by group when buying several types in one year.
• Budget recurring costs: chemicals, PPE, fuel for engine models and maintenance, separate from equipment.
• Training and handover: demonstration, operator training, label-based mixing and care.
• After-sales: warranty, technician contact and parts supply.
• Standards documents: genuine certification for each model and supplier quality documents.
• Vehicle units: check compatibility with your vehicles and plan driver and operator roles.

Every draft specification should be reviewed by procurement officers. This article does not replace your agency's regulatory advice.

Example field perspective

(A composite based on common field situations, not a quote from a real person.)

"We used to walk into budget meetings with a stack of papers. The mayor would ask what we actually needed, and we couldn't say it in one sentence. Once we used a table grouped by job, we could say: we already have an outdoor fogger; what we lack is an indoor unit for the child center and a backpack unit for the field villages. The mayor got it immediately, and the council asked fewer questions because the reasoning was clear."

A good summary does not reduce information; it puts information in the order decision-makers can use.

Frequently asked questions

Q: With a limited budget, which group first?
A: Start with the biggest gap. If you have a thermal fogger but no indoor unit, consider group 2 first, guided by case data and local conditions.

Q: Thermal fogger versus ULV sprayer?
A: A thermal fogger uses heat to make white fog for outdoor use; a mosquito sprayer of the ULV type makes droplets without heat and suits indoor and controlled work.

Q: Are prices in the table?
A: No. Prices depend on model, quantity and delivery terms; request a quotation from WHD.

Q: Classrooms without outlets everywhere?
A: AIROSTAR is a cordless Li-ion ULV unit running up to about 60 minutes per charge.

Q: How do the three vehicle units differ?
A: UM2 has 2 nozzles with remote and manual control; UM4 has 4 independently controlled nozzles and an 18 hp engine; GREENFOG F4 has 4 adjustable nozzles, a 13.5 hp petrol engine, electric start and an 85 L tank.

Q: Do these machines kill every insect?
A: The machine creates droplets; effect depends on product and label. Choose products for the target pest.

Q: Can we see several models demonstrated?
A: Contact WHD at 065-556-6294 or LINE @whd268 to arrange it.

Three next steps

1. Call or LINE for quotations and specifications for the models you circled: 065-556-6294 or @whd268.
2. Request demos and training for the teams who will use them indoors, outdoors and on vehicles.
3. Budget and procure by the rules, attaching this table as the rationale.

Match every job with the right machine, all ten models in one place

Thermal foggers, indoor ULV cold foggers, backpack units and vehicle-mounted sprayers, with WHD after-sales service.

See all mosquito foggers and prices - click here

Call 065-556-6294 · LINE @whd268

Go to the government equipment hub

Related links

• WHD government mosquito and insect control equipment hub
• AIROFOG AT35 stainless steel thermal fogger
• GREENFOG F4 vehicle-mounted ULV sprayer
• Department of Disease Control, Thailand
• WHO fact sheet: vector-borne diseases

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