What do the terms "W" and "WP" refer to in pesticide terminology?

The terms "W" and "WP" in pesticide terminology refer to "Wettable Powders." This classification of pesticides indicates that the product is available in a powder form that, when mixed with water, can be dispersed as a suspension. Wettable powders require agitation to remain evenly distributed in the water, which is essential for effective application and uniform coverage on the target area.

Wettable powders are commonly used because they can be effective in providing active ingredients that are intended to combat pests. Additionally, they often have a lower risk of being easily washed away from surfaces and can provide longer-lasting effects compared to other formulations. Understanding these details is crucial for applicators when selecting the appropriate pesticide formulation for specific applications in pest control.