Which pesticide formulation generally presents the lowest risk when properly applied?

Granules are considered to present the lowest risk when properly applied due to their specific formulation and application characteristics. Granules are solid, dry particles that are often larger than dust or powder formulations, making them less likely to drift in the air during application. This characteristic minimizes exposure to non-target organisms, including beneficial insects, birds, and humans.

Additionally, granules typically require moisture to activate the pesticide's efficacy—either from water or rainfall—leading to a more controlled release of the active ingredient into the environment. This activation process further reduces the risk of immediate exposure and allows for more precise targeting of pests, as the granules can be placed directly in the pest habitat.

By contrast, liquid solutions, aerosols, and wettable powders can pose greater risks due to their potential for drift and volatilization. Liquid solutions can easily spread and drift on the wind, increasing the likelihood of unintended exposure. Aerosols, being fine particles in a propellant, can also travel long distances when released into the air. Wettable powders, while effective, may require agitation and can create fine dust, which can be inhaled or affect non-target organisms.

Thus, the application method and physical properties of granules contribute to their reputation as a lower-risk pesticide formulation when