What is the primary function of agitators in pest control equipment?

The primary function of agitators in pest control equipment is to keep the spray uniformly mixed. This is essential for ensuring that the pesticide is evenly distributed throughout the solution and that the active ingredients remain suspended in the liquid, preventing them from settling at the bottom of the tank. An even mixture helps maintain the efficacy of the product during application, as inconsistent mixing could lead to uneven pesticide distribution on the target area, resulting in potential treatment failure or environmental harm.

The other options involve different functions that are not primary roles of agitators. For example, while filtering contaminants is an important aspect of maintaining equipment function, it is not the role of agitators. Similarly, increasing pressure in the tank is typically managed by different components of the system, and diluting the pesticide is a separate task performed prior to application, not something agitators are designed to do. Thus, the role of agitators is specifically related to mixing and maintaining a consistent spray solution.