Which type of pesticide formulation typically requires constant agitation to remain in suspension due to its dry, finely ground nature?

Wettable powders are a type of pesticide formulation that consists of dry, finely ground particles which require constant agitation to remain suspended in a liquid solution. This is essential because, if not agitated, the particles tend to settle at the bottom of the sprayer or application equipment, leading to uneven distribution of the pesticide when applied. When mixed with water, wettable powders create a suspension that needs to be kept in motion to ensure that the active ingredients are consistently mixed with the liquid and can be effectively delivered to the target area.

In contrast, dust formulations are designed to be applied directly without needing mixing and do not require agitation because they are already in a dry state. Liquid baits are primarily ready-to-use formulations that do not require agitation for effective distribution, while pellets are solid formulations that can be scattered and do not need to be mixed with a liquid for application. Thus, wettable powders stand out among these options for their specific requirement of constant agitation to maintain effective application.