Which of the following formulations requires agitation during application?

Emulsifiable Concentrates (EC) require agitation during application because they consist of oil-based ingredients mixed with an emulsifier that allows them to be dispersed in water. Without proper agitation, the mixture can separate, which would lead to an unequal concentration of the active ingredient in the solution. Agitation ensures that the formulation remains uniformly mixed, allowing for consistent application and effectiveness against the target pests.

In contrast, soluble powders and water-soluble concentrates have different characteristics. Soluble powders dissolve completely in water and do not require agitation once mixed, as they create a homogeneous solution. Similarly, water-soluble concentrates are designed to dissolve in water easily, minimizing the need for constant stirring. Therefore, knowing the specific requirements for agitation is crucial for ensuring the efficacy and safety of the pest control application.