Which type of pesticide formulation requires constant agitation to remain mixed?

Wettable powders are a type of pesticide formulation that requires constant agitation to ensure that the product remains evenly mixed in the tank solution. This is due to the physical properties of wettable powders, which consist of fine solid particles that can settle out of suspension if not kept in motion. Agitation helps to maintain a uniform distribution of the active ingredients throughout the solution, ensuring that the application of the pesticide is effective and that the target pests receive the intended dosage.

In practice, if an applicator does not provide sufficient agitation when using wettable powders, there is a risk of an uneven application, which can lead to ineffective pest control or, conversely, potential harm to non-target organisms due to higher concentrations in certain areas.

Other formulation types may not require constant agitation or may have different behaviors in solution. Water dispersible granules may need some agitation but are less prone to settling than wettable powders. Emulsifiable concentrates typically form a stable emulsion with water, requiring less constant agitation once mixed. Soluble pesticides dissolve completely in water and do not separate out, thus not needing constant stirring for mixing.