Which insecticide formulation is least used in mosquito control?

Dust formulations are least used in mosquito control primarily due to their application characteristics and effectiveness. Dusts are typically applied in dry form, which limits their effectiveness in areas where mosquitoes breed or rest, as they may simply blow away or become ineffective when exposed to environmental factors such as wind and rain. Additionally, dust can have difficulty adhering to surfaces, which diminishes its potential to control mosquito populations effectively.

On the other hand, emulsifiable concentrates, granules, and wettable powders have distinctive advantages that make them more favorable for mosquito control. Emulsifiable concentrates are easy to mix with water and can cover large areas effectively due to their ability to create a uniform spray. Granules benefit from their slow release characteristics and can be used in specific breeding sites, while wettable powders are effective in creating suspensions that can be sprayed, allowing for good coverage and adherence to mosquito habitats. These attributes contribute to the widespread use of these formulations, highlighting why dusts are less favorable in this context.