Integrated Vector Management (IVM) Explained for Local Government Leaders in 5 Minutes: Where Spraying Fits in the Plan, and What the AIROFOG U240 ULV Cold Fogger Contributes

Many local leaders hear the term IVM in public health meetings but have no time for long technical documents. This guide summarises the World Health Organization's integrated vector management concept in plain language. It explains why spraying alone is not enough, where spraying belongs in a sound plan, and how a compact ULV cold fogger such as the AIROFOG U240 helps teams treat indoor and close-contact spaces precisely when spraying is needed.

Executive summary (1-minute read)

• What IVM is: A WHO concept that combines several methods rationally and uses evidence to decide, so that mosquito and other vector control is effective, economical and sustainable, rather than relying on one method.
• Where spraying fits: Spraying is one tool among several. It reduces adult mosquitoes when there are cases, outbreaks or unusual mosquito density, and it must always run alongside breeding site removal and community participation.
• Why it matters: An integrated plan helps reduce dengue cases, avoids unnecessary chemical use, cuts repeat complaints and makes spending easy to justify.
• Why the U240: A German-made ULV mosquito sprayer with 15 to 30 micron droplets, compatible with water- and oil-based formulations, a 5 L tank, 3.1 kg weight and a fire- and UV-resistant body. It suits indoor work and places that need precision.
• What to do next: Ask your public health team for a one-page integrated vector control plan, then check whether each equipment role in that plan is covered.

Illustrative scenario: the mayor's question at the budget meeting

(Illustrative scenario) At a budget meeting of a subdistrict administration, Chanphen, the public health officer, presents next year's dengue plan. Her slides cover training village health volunteers, the 3 Keeps campaign, larvicide distribution, larva-eating fish, monthly larval surveys, coordination with schools and temples, and finally one line of equipment: a ULV sprayer.

Sompong, the chief executive, asks bluntly: "Last year we sprayed the whole subdistrict several times and people still got sick. Why not buy two or three more machines and spray more often?" Several council members nod, because spraying is what residents see. Chanphen knows that spraying more often without tackling breeding sites means more chemicals, a higher risk of resistance and mosquitoes that still come back from larvae in containers.

She needs to explain integrated vector management in a few minutes and show that the machine she is requesting has a clear role in the plan, not a blanket spraying programme. This guide is that explanation.

The cost of having no integrated plan

Health

Aedes mosquitoes transmit dengue, chikungunya and Zika, and Anopheles mosquitoes transmit malaria in some areas. Dengue typically begins with a sudden high fever, headache and body aches, and the phase when the fever falls needs close monitoring for shock. Children, older adults and people with chronic illness are most at risk. Every avoidable case is a family under strain and a burden on local health services.

Budget

Spray-only programmes consume chemicals, fuel and overtime year after year without lasting results. Money spent on repeated blanket spraying is money not spent on the source reduction and training that keep mosquito numbers down.

Image, complaints and workload

When mosquitoes return days after a spray truck passes, residents conclude the agency is going through the motions. Complaints repeat, posts spread online, and staff are pulled from one emergency to the next with no time to plan. An integrated plan breaks this cycle by making every action purposeful and visible.

IVM in 5 minutes: the core idea

WHO describes IVM as a rational decision-making process for the optimal use of resources for vector control. Put simply, instead of asking "what should we buy to kill mosquitoes?", ask "where do our mosquitoes come from, who is at risk, and which combination of methods works best for the money?" Then choose tools that answer those questions.

WHO guidance commonly summarises IVM in about five key elements. Here is what they mean for a local leader.

The key point: IVM is not against spraying. It asks that spraying be used at the right moment, in the right place, with the right equipment and with data that justify it. WHO's Global Vector Control Response framework follows similar ideas of integration, evidence and cross-sector action; more detail is available on the WHO website.

Terms a leader should know (one line each)

The IVM toolbox: what each method does

Think of mosquito control like personal health. Long-term prevention is diet and exercise; medicine is for when you are sick. In IVM, prevention means giving mosquitoes nowhere to breed, while spraying treats the symptom when adult mosquitoes are numerous or disease risk is high.

So where does spraying fit in the plan?

In an IVM plan, spraying has a defined position as a response and support tool, not the only tool. It plays an important role in these situations:

1. Dengue cases or suspected cases: Disease control practice widely used in Thailand includes adult mosquito control around the patient's home within a radius of about 100 metres, alongside breeding site removal.
2. Wider outbreaks: Spraying reduces adult mosquitoes in areas with ongoing cases, following the health team's plan.
3. Before large gatherings: School term openings, festivals or major meetings in higher-risk areas.
4. Buildings with vulnerable people: Schools, child development centres, health facilities and government buildings, where Aedes mosquitoes often rest in dark corners, under desks, behind cabinets and on curtains.

By contrast, calendar-based spraying of an entire subdistrict without supporting data is something IVM asks leaders to review. It consumes chemicals and budget, the effect fades if breeding sites remain, and repeated use of the same chemical class can speed up resistance.

Owning a large fleet of mosquito fogger units does not make a good plan. A good plan knows when, where and for whom each machine will be used, especially to protect people at risk from Aedes mosquitoes, such as students, older adults and people with chronic illness.

Before approving a major spraying round, a leader can ask three questions: what data triggered it, where and when will it happen, and what will be done alongside it so mosquitoes do not return? If the team can answer all three, the plan is already in line with IVM.

A 90-day IVM starter plan for leaders

1. Days 1 to 30, set up: Appoint a working group across divisions, collect case and larval data, map high-risk villages and buildings, and inspect every existing sprayer.
2. Days 31 to 60, act on causes: Run breeding site campaigns with volunteers, schools and temples, treat containers that cannot be covered, and agree written spraying criteria with the health team.
3. Days 61 to 90, equip and evaluate: Fill equipment gaps by role, train operators, repeat the larval survey and present before and after indicators to the council.

The timings are indicative and should follow your agency's calendar and local health advice. The point is sequence: understand the situation, fix causes, then make sure the spraying capacity you need is ready and used well.

Why the old approach underperforms

1. Relying on spraying alone: Mosquitoes fall for a few days, then larvae in containers produce a new generation.
2. No data: Spraying by feel or under pressure rather than at real hotspots wastes chemicals and money.
3. Working in silos: The health team sprays, but drains are not cleared, containers are not collected and schools do not know the plan.
4. The wrong machine for the space: Large equipment used indoors, or droplets so large they fall to the floor quickly.
5. The wrong timing: Strong sun or wind makes droplets evaporate or drift away.
6. Non-standard equipment without service: Frequent breakdowns, no spare parts and no training.
7. No evaluation: Nobody knows what worked, so next year repeats the same pattern.

The indoor spraying tool: AIROFOG U240 ULV cold fogger

When an IVM plan calls for spraying indoors or close to people, the right machine is easy to control, produces fine droplets and is easy to carry. The AIROFOG U240 is a German-made ULV mosquito sprayer designed for exactly this kind of work.

In a leader's terms, the U240 lets the health team spray precisely inside buildings: classrooms, meeting rooms, patient rooms and homes around a case. Droplets of 15 to 30 microns stay airborne long enough to contact flying mosquitoes. Compatibility with water- and oil-based products lets the team choose formulations according to technical advice and the setting, and at 3.1 kg one staff member can carry it from room to room. Beyond mosquitoes, agencies can use it for indoor insect control against pests such as cockroaches and flies with suitable products.

10 reasons the U240 fits a local IVM plan

1. Targeted spraying based on data, exactly what IVM asks for, rather than blanket coverage.
2. 15 to 30 micron droplets, within the fine range used for adult mosquito control. See the AIROFOG U240 product page.
3. Water- and oil-based compatibility helps teams rotate or select products as advised, which matters for resistance management.
4. 3.1 kg means one operator can work indoors for longer with less fatigue.
5. A 5 L tank suits several rooms in one round.
6. A fire- and UV-resistant body for hot climates and frequent transport.
7. Made in Germany, which supports confidence when requesting approval for government equipment.
8. Protects vulnerable groups indoors in schools, child development centres and health facilities, which IVM plans typically prioritise.
9. After-sales support from WHD technicians, spare parts and training, matching IVM's capacity building element.
10. Works well with other machines: pair it with a backpack unit such as the SUPER ROTARY outdoors, or a vehicle unit such as the AIROFOG UM2 on community roads.

Before and after adopting IVM thinking

What the leader gains

• Public trust: Residents see multi-faceted work, not only a spray truck passing by.
• More durable reductions in cases and complaints, because causes are tackled along with spraying.
• Visible results: Indicators such as larval indices, household participation and case responses can be reported to the council.
• Budget used wisely: Less unnecessary spraying, and equipment purchased for a defined role.
• Audit readiness: Every purchase can be explained by its place in the plan and procured under the rules.

For the public health team: a one-page IVM plan leaders can approve

• Situation: Recent case data from local services, HI and CI larval indices and a map of high-risk villages.
• Targets: Measurable goals, such as lower larval indices in high-risk villages and a response to every case according to disease control guidance.
• Integrated measures: Environmental management, biological control, larvicides, personal protection and spraying when justified.
• Spraying criteria: When to spray (cases, outbreaks, high-risk events) and which machine type for which setting.
• Chemical management: Registered public health products, label mixing and a rotation plan in line with technical guidance.
• Equipment roles: For example the U240 indoors, backpack units around patient homes outdoors and vehicle units on roads.
• Safety: Protective equipment, notifying building users and re-entry times according to product labels.
• Evaluation: Compare indicators before and after, and report to leaders regularly.

An IVM checklist leaders can forward today

• ☐ A vector control working group with several divisions and outside partners
• ☐ Current larval index and case data
• ☐ A breeding site campaign with volunteers, schools and temples
• ☐ Clear criteria for when and where to spray
• ☐ Spraying equipment for every role: indoors, outdoors and roads
• ☐ Every sprayer inspected and maintained on schedule
• ☐ Staff trained in operation and safety
• ☐ Indicators and a reporting cycle to leadership

Procurement tips that align equipment with the IVM plan

Good government mosquito control equipment procurement starts from the plan, not the catalogue. These general points help make purchases explainable and auditable; confirm with your procurement rules and supplies unit.

• Reference the equipment's role in the plan, for example indoor spraying in high-risk buildings or treatment around patient homes.
• Specify features that relate to the job: ULV system, droplet size range, compatible formulations, tank capacity and weight.
• Request specification documents and copies of certifications that actually exist.
• Require demonstration and training on operation, mixing and maintenance.
• Set warranty, spare parts and technician contact terms.
• Budget the machine under the equipment line in the local development plan, and budget chemicals, larvicides and protective gear separately.

For value for money, consider the number of high-risk buildings to protect, expected case responses per year, available staff and service life with good maintenance, rather than purchase price alone.

Example field perspective

Example field perspective (a composite based on common experience, not a quote from a real person): "At first our leaders wanted lots of spraying because residents like to see it. When we laid out the larval data and the case map and explained that mosquitoes come back if you only spray, they understood. This year more budget went to breeding sites and volunteer training, and we bought sprayers to match the job: a small unit for schools and the child centre. When a child gets sick we can go in right away without hauling a big machine into the classroom."

Frequently asked questions

Is IVM a legal requirement for local governments?

IVM is a concept and approach promoted by WHO, not a direct legal requirement. Public health guidance on vector-borne disease control follows compatible principles, and adopting IVM makes local plans more rational and auditable.

If we adopt IVM, do we still need sprayers?

Yes. Spraying is an important tool for cases and outbreaks. The difference is buying machines that match defined roles and using them against clear criteria.

What is the difference between a thermal fogging machine and a ULV cold fogger?

A thermal fogger uses heat to create visible fog; a ULV cold fogger produces fine droplets without heat and uses small volumes. Each suits different settings, so follow your health team's advice.

What is the U240 best for?

Indoor and precision work: schools, child development centres, health facilities, government buildings and homes around cases. For large outdoor areas, pair it with backpack or vehicle-mounted units.

How do we know the IVM plan is working?

Track larval indices before and after, case numbers compared with previous periods, repeat complaints and the reach of community activities.

Is frequent spraying harmful?

Spraying more than necessary wastes money, may affect chemically sensitive people and can accelerate resistance, so spray against criteria and rotate products as advised.

Next steps in 3 moves

1. Call or LINE for a quotation and specification: 065-556-6294 or LINE @whd268 for AIROFOG U240 details to support your IVM plan and budget.
2. Request a demonstration and training: Let the health team try it indoors and learn mixing, maintenance and safety.
3. Budget and purchase by the rules: Include it in the local development plan and equipment budget, then follow procurement procedures.

Put spraying in the right place in your IVM plan

A German-made ULV cold fogger for precise indoor vector control, backed by WHD technicians, spare parts and training.

View AIROFOG U240 product and price, click here

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Call 065-556-6294 · LINE @whd268 · Email worldhealthdisinfection@gmail.com
World Health Disinfection Co., Ltd., 88 268 Kanlapaphruek Road, Bang Khae, Bangkok 10160, Thailand

Related links

• WHD hub: mosquito and insect control equipment for government agencies
• SUPER ROTARY backpack ULV sprayer for outdoor work
• AIROFOG UM2 2-nozzle pickup-mounted ULV sprayer
• WHO fact sheet: Vector-borne diseases
• Department of Disease Control, Ministry of Public Health (Thailand)