What describes a wettable powder?

A wettable powder is accurately described as a formulation that consists of active ingredients that are adhered to a dry carrier. This formulation requires agitation when mixed with water to ensure that the particles remain suspended in the solution for effective application. The wettable powder formulation allows for precise delivery of the pesticide, as it can be mixed into a spray solution and effectively distributed over surfaces or plants. The requirement for agitation is key; it ensures that the active ingredients remain evenly dispersed during application, maximizing their effectiveness in controlling pests.

In contrast, other options do not correctly characterize wettable powders. An oil solution mixed with emulsifiers refers to emulsifiable concentrates, which are liquids, not powders. A pesticide in aerosol form contains tiny droplets but does not involve a dry powder aspect. Meanwhile, a dry formulation that creates a gas describes a fumigant or gas-forming pesticide, which operates on different principles than a wettable powder. Hence, the definition provided in the correct choice accurately aligns with the characteristics and application processes of wettable powders.