Thermal Fogging Machine and a 12-Month Aedes Control Action Plan for Municipal Public Health Divisions: Pre-Monsoon, Outbreak Season and Post-Monsoon

Most municipalities start thinking about Aedes mosquitoes only after the first dengue patient of the year is reported, which always leaves them one step behind. This article lays out a full-year plan as a simple month-by-month table that a mayor can understand in minutes and a public health team can put to work right away, and it explains where a mosquito fogger such as the AIROFOG AT35 thermal fogging machine fits into that plan.

Executive summary (1-minute read)

• The problem: Municipal Aedes control is usually run in "firefighting" mode: wait for patients, then spray. Staff burn out, budgets overrun and residents feel the municipality always arrives late.
• The solution: A 12-month action plan in three phases: pre-monsoon (prepare and remove breeding sites), outbreak season (fast response around patient homes) and post-monsoon (review, maintain equipment and budget for next year).
• Where the machine fits: A mosquito fogger removes adult vector mosquitoes. It works together with source reduction and the "3 Keeps" campaign, never instead of them.
• Why the AT35: The AIROFOG AT35 thermal fogging machine has a 100% stainless steel body, is lightweight, runs both water-based and oil-based chemicals and is certified in Germany and the UK. It suits community and public-area work.
• What to do next: Ask your public health division to inspect every existing fogger in the first quarter, and request a quotation and specification sheet so the equipment budget is approved before the rains.

A calendar full of the word "urgent"

(Illustrative scenario)

Wanna is a public health technical officer at a mid-sized town municipality in central Thailand. Her area includes a crowded community along the railway line, several housing estates, a fresh market, municipal schools and a child development center. Every year her first dengue phone call arrives around the start of the rainy season, and from then until the end of the year her calendar fills up with the word "urgent".

Last June, two schoolchildren from the same neighborhood fell ill. The team had to spray around the patients' homes immediately, but when they opened the equipment store they found that the old thermal fogger, unused since the previous season, would not start. Its spray tube was crusted with dried chemical residue. A second machine had a body that was starting to corrode. The team borrowed a fogger from a neighboring municipality, and by the time they were ready to go, the early morning window when Aedes mosquitoes are most active had already passed.

It did not end there. By July, cases had spread to three more neighborhoods. The insecticide stock ran down faster than planned. Village health volunteers had to repeat larval surveys again and again. Residents began posting in community Facebook groups that "the municipality came too late" and "they sprayed, but there are still mosquitoes everywhere". The mayor had to answer questions in the municipal council, and Wanna worked overtime almost every day.

When the rains eased, everyone forgot about mosquitoes. No one reviewed what went wrong, repaired the broken machine or submitted an equipment request in time. Wanna's story is not about a lazy team; it is about the absence of a full-year plan. The most effective Aedes work starts in the dry months, before the year's first generation of mosquitoes can multiply.

The real cost of having no year-round plan

1. Public health

The Aedes mosquito carries dengue, chikungunya and Zika. Dengue usually begins with a sudden high fever, headache and muscle pain; some patients develop small bleeding spots on the skin, and as the fever drops a patient can slip into shock, which can be fatal. The groups of greatest concern are school-age children, older people, people with chronic conditions and pregnant women. Chikungunya causes severe joint pain that can last for weeks, while Zika is a particular worry during pregnancy. Without a plan, response is slower and the chance of further spread inside the community grows.

2. Budget overruns

Waiting for an outbreak usually costs more than preparing ahead: rushed chemical purchases, overtime, emergency repairs, borrowed equipment, and a missed regular equipment budget. Having no plan simply moves spending into the most expensive part of the year.

3. Image and public trust

With every neighborhood on LINE and Facebook, a delay of a few days becomes town talk. Residents do not see how hard the team works; they see a sick neighbor and no one spraying. Trust erodes fast.

4. Rising complaints

Mosquito complaints arrive together with complaints about garbage, stagnant water, blocked drains and overgrown land. Without a joint plan with the engineering and sanitation units, all of them land on the public health division as an endless backlog.

5. Staff workload

Small disease control teams also handle sanitation and food safety. In outbreak season they spray at dawn, report by day and spray again at dusk. A heavy or unreliable mosquito sprayer adds fatigue that hurts both work quality and operator safety.

Why the usual fixes do not last

The most common reasons results stay inconsistent:

1. Old machines that are never tested before the season. Equipment stored all year without a test run tends to fail on the day it is needed: hard starting, clogged nozzles or bodies corroded by chemical residue.
2. Spraying at the wrong time. Aedes mosquitoes feed in the early morning and late afternoon. Fogging at midday, in heat and wind, sends the fog upward and away and gives poor results.
3. Droplet size that does not match the task. Droplets that are too large fall to the ground quickly; droplets that are too small may drift away. Equipment designed specifically for vector control matters.
4. Relying on spraying alone. Fogging kills adult mosquitoes, but if breeding sites remain, a new generation emerges within days. Spraying must always be paired with source reduction.
5. Cheap, non-standard equipment. Machines with no local distributor or spare parts may have to be thrown away after the first breakdown, becoming government assets that stay on the register but never work.
6. No after-sales service or training. New staff do not know how to mix chemicals or flush the machine after use, so the equipment wears out quickly and spraying quality drops.

Three terms every leader should know (one line each)

• Thermal fogging: Heat turns the chemical solution into a visible white fog that drifts into bushes, under raised houses and into the corners where mosquitoes rest.
• ULV (Ultra Low Volume): Spraying a very small volume of liquid broken into a very large number of fine droplets, without heat; commonly used indoors or on vehicles.
• Micron: A unit of droplet size; one micron is one thousandth of a millimeter. Micron-sized droplets stay in the air long enough to contact flying mosquitoes.

A thermal fogging machine suits outdoor community field work; a ULV cold fogger suits indoor or vehicle work. In this plan the thermal fogger is the field team's core tool.

The logic of the plan: three phases, one goal

This plan scales to any municipality. Rainy seasons differ by region, so shift the timeline to your real season and use local case history.

Phase 1: Pre-monsoon (typically January to April)

The goal is to prepare and break the cycle early. Mosquito numbers are still low, but Aedes eggs stuck to containers can survive dry conditions for a long time and hatch as soon as the first rains arrive. Removing containers, destroying breeding sites, testing every mosquito fogger, training the team and requesting the equipment budget all belong in this phase.

Phase 2: Outbreak season (typically May to September)

The goal is fast, sustained response. When a case is reported, the team investigates, removes larvae and fogs for adult mosquitoes around the patient's home within a radius of about 100 meters, a practice widely used by Thai public health agencies, then repeats spraying on the cycle set by the technical officer while intensifying the "3 Keeps, 3 Diseases" campaign.

Phase 3: Post-monsoon (typically October to December)

The goal is to capture lessons and prepare for next year. Surveillance continues because stagnant water remains, but spraying demand drops. This is the right time to service equipment, update the asset register, evaluate results and submit next year's budget, which conveniently aligns with the start of the government fiscal year.

Month-by-month action table (ready to forward to your team)

A general template: forward it to your public health division and fill in names and target communities.

Note: months are a general guide for areas where the rains start around May. Adjust to your real season and coordinate with the local health promoting hospital, district health office and regional disease control office for current surveillance data.

The AIROFOG AT35 thermal fogging machine: the field team's core tool all year

Once the plan is clear, the next question is which equipment can actually deliver it. For fogging around patient homes, temple grounds, markets, drains and densely vegetated neighborhoods, the thermal fogger remains the tool disease control teams know best, and the AIROFOG AT35 thermal fogging machine is the model World Health Disinfection recommends for this job.

Key facts about the AT35

• A thermal fogger for mosquito control and general insect control.
• Body made of 100% stainless steel, resistant to chemical corrosion and humidity.
• Lightweight, so one operator can carry it into lanes, under houses and into places vehicles cannot reach.
• Works with both water-based and oil-based chemicals, giving flexibility to follow health agency recommendations.
• Certified in Germany and the United Kingdom.
• Suitable for homes, factories, hospitals and public areas.

Just as important for a 12-month plan is what sits behind the machine. World Health Disinfection operates under ISO and GMP systems, performs 100% quality control before delivery, and provides full after-sales service with technicians and spare parts, and its products meet Thai government equipment standards. That means the February tasks (repair and specs), the March task (training) and the November task (maintenance) in your plan have a real partner behind them, not just a line on paper.

In short, this government mosquito control equipment is both a machine and a support system that keeps every month of the plan on track.

10 reasons to build the AT35 into your municipal action plan

1. Ready after long storage. The 100% stainless steel body reduces rust and corrosion while the machine sits idle after the rainy season.
2. Small teams can do more. It is light enough for one operator, so you can split the team and fog several sites at once during an outbreak.
3. Reaches where trucks cannot. Narrow lanes, backyards, spaces under houses and bushes are where Aedes mosquitoes rest; a hand-carried fogger gets there.
4. Flexible chemical choice. It accepts both water-based and oil-based formulations to match health agency guidance and site conditions.
5. International certification. Certified in Germany and the UK, giving procurement committees clear supporting documents.
6. Multi-site use. Communities, schools, markets, temples, factories, hospitals and public areas: one machine serves many missions all year.
7. Controls all kinds of insects in your area. Beyond mosquitoes, it supports other insect control with suitable chemicals, so the asset earns its keep.
8. After-sales service and parts. No worry about where to repair it. See the AT35 thermal fogger details.
9. 100% quality check before delivery. Fewer surprises on acceptance day and a machine ready for the field immediately.
10. Meets government equipment standards. Procurement runs smoothly and can be explained to the local council and auditors.

Before and after a 12-month plan

What leaders gain

• Citizen trust: Residents see the municipality in the field before outbreaks, not after people fall ill.
• Fewer complaints: A clear alert channel and response time reduce frustration.
• Visible results: Campaigns, school treatments and weekly reports are achievements you can present to council and communicate to communities.
• Budget used wisely: Buying in the normal cycle avoids emergency prices and delivers equipment that lasts for years.
• Audit-ready purchasing: Justification, condition data on old machines and clear specifications make procurement transparent and defensible.
• Better staff morale: A team that works to a plan is not permanently fighting fires.

For the public health team: technical considerations

• Fogging is a supporting measure: Thermal fogging targets adult mosquitoes that may carry virus. It must go with larval control and source reduction, in line with Department of Disease Control guidance.
• Timing: Fog at dawn or dusk, when Aedes mosquitoes are active and the air is still. Avoid strong wind, rain and harsh midday sun.
• Radius and cycles: Fog around patient homes within roughly 100 meters and repeat on the cycle set by the technical officer, following local health agency guidance.
• Chemical choice: Use properly registered insecticides, mix according to the label, choose water- or oil-based formulations to suit the site, and consider rotating chemical classes to manage resistance, as advised by technical agencies.
• Operator safety: Wear a respirator, goggles, gloves and protective clothing. Ask residents to cover food and move children, older people and pets away during fogging.
• Record keeping: Log date, time, area, households, chemical volume and machine condition for evaluation and for each unit's logbook.
• Machine care: Flush the system after every use according to the manufacturer's manual, check wear parts mid-season and schedule a full service after the rains.

Procurement tips aligned with the 12-month plan

A common mistake is budgeting so late that the machine arrives after the rains. General guidance follows; confirm details with your procurement officer.

1. Start from data, not price

Use the January condition report as justification: machines owned, machines working, repairability and service area size.

2. Write performance-focused specifications

• Type: thermal fogger for mosquito and insect control
• Body material: corrosion resistant, such as stainless steel
• Chemical compatibility: both water-based and oil-based
• Product certification documents and supplier quality system
• Warranty, after-sales service and local spare parts
• Operator training on use and maintenance at delivery

Avoid brand-locked specifications or numbers that have nothing to do with real field performance.

3. Budget for the whole system

Beyond the machine, plan for chemicals, personal protective equipment, maintenance and training. A simple framework is to start from the number of high-risk communities, multiply by the expected number of fogging rounds, and compare that with your machine and staff capacity. That tells you how many mosquito foggers you really need.

4. Deliver before the rains and accept with care

Schedule delivery and training before May where possible. On acceptance day, ask for a demonstration of starting, fogging and flushing, plus a Thai-language manual and technician contacts.

Example field perspective

(Example field perspective: a composite view drawn from typical municipal disease control work, not a quote from a specific person.)

"We never used to think about mosquitoes in January. When we drew up a full-year table, we found that only half of our old machines actually worked. Once the budget went in on time and we had a lightweight fogger that does not rust, the team could cover several sites in one morning. The biggest change was that we stopped chasing problems, and the mayor had numbers for the council every week."

Frequently asked questions

1. Why start Aedes control in January when there are few mosquitoes?

Aedes eggs survive dry conditions and hatch when the rains come. Removing containers and breeding sites before the rains cuts down the first generation, and it is also the period when you have time to test, repair and budget for equipment.

2. Is thermal fogging alone enough?

No. Fogging reduces adult mosquitoes that may transmit virus, but it must go together with the "3 Keeps, 3 Diseases" campaign and larval control so a new generation does not emerge.

3. What is the difference between a thermal fogger and a ULV cold fogger?

A thermal fogger uses heat to create a visible fog, ideal for outdoor field work and vegetation. A ULV cold fogger uses no heat and breaks a small volume of liquid into fine droplets, suited to indoor or vehicle-mounted work. Many municipalities keep both.

4. How many foggers does a small municipality need?

There is no fixed number. Base it on high-risk communities, past case numbers, staff numbers and the rounds needed during outbreaks, and keep at least one spare machine so work never stops while one is serviced.

5. Which chemicals can the AT35 use?

The AIROFOG AT35 supports both water-based and oil-based chemicals. Use registered products, mixed according to the label or health agency guidance.

6. What support comes after purchase?

World Health Disinfection performs 100% quality checks before delivery and provides after-sales service, technicians and spare parts. Ask about training and warranty on 065-556-6294 or LINE @whd268.

Next steps in 3 moves

1. Call or LINE for a quotation and specifications. Contact 065-556-6294 or LINE @whd268 for AT35 data to support your budget request.
2. Request a demonstration and training. Let your public health team handle the machine and learn mixing, fogging and flushing.
3. Budget and procure by the rules. Include it in the equipment budget and complete procurement so the machine arrives before the rainy season.

Start your year-round Aedes plan with a machine that is ready to work

The AIROFOG AT35 thermal fogging machine: 100% stainless steel, lightweight, water- and oil-based chemicals, backed by World Health Disinfection after-sales service.

See AT35 Product and Price: Click Here

Browse Government Mosquito Control Equipment

Tel 065-556-6294 · LINE @whd268 · worldhealthdisinfection@gmail.com
88 268 Kanlapaphruek Road, Bang Khae, Bangkok 10160

Related links

• Government mosquito and insect control equipment hub
• GREENFOG F4 vehicle-mounted ULV sprayer for wide areas
• SOLO PORT423 backpack ULV sprayer
• Department of Disease Control, Ministry of Public Health
• WHO fact sheet: Dengue and severe dengue

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