What type of pesticide formulation has the lowest risk when properly applied?

The formulation with the lowest risk when properly applied is granules. Granules are solid pesticide formulations that are typically larger particles applied directly to the soil or plant surfaces. Their physical form allows for more precise applications, reducing the likelihood of drift or unintended exposure to non-target organisms, including beneficial insects, wildlife, and humans.

When applied correctly, granules also reduce the risk of runoff since they adhere to the target area better than liquids or powders. The application method often requires no mixing with water, minimizing the chance of errors in concentration that can occur with liquid formulations. Additionally, granules can often provide residual effects, meaning their active ingredients can persist in the area for an extended period, enhancing effectiveness while still posing a lower risk once applied.

In comparison, liquids and aerosols can create a higher risk of drift due to their fine droplets, which can easily move off-site with air currents. Powders may also pose risks if they become airborne, leading to unintended exposure. Because of these factors, granules are considered the safer option when used in accordance with label instructions and best management practices.