MDARD Michigan Core Pesticide Applicator Practice Exam

Which formulation would be better if you are concerned about damaging the treated surface?

1. Emulsifiable concentrate

2. Wettable powder

3. Granular formulation

4. Suspension concentrate

The correct answer is: Wettable powder

Choosing a wettable powder formulation is advantageous when you are concerned about damaging the treated surface. Wettable powders are designed to create a suspension in water, allowing for a more controlled application. They tend to adhere well to surfaces without creating a heavy film, which can minimize the risk of damage. Additionally, wettable powders can be diluted to lower concentrations, allowing for more precise application rates. This added control is particularly beneficial when treating sensitive surfaces, such as delicate plants or various materials that may react negatively to more concentrated or aggressive formulations. Compared to emulsifiable concentrates or suspension concentrates, wettable powders are less likely to penetrate or alter the substrate being treated, thus reducing potential harm. Granular formulations, while non-liquid and generally gentler on surfaces, may not always provide the necessary coverage for the intended pest control, depending on the application context.