Why are some pesticides classified as restricted-use?

Pesticides are classified as restricted-use primarily because they pose a greater risk to human health, non-target organisms, or the environment, necessitating that only trained individuals apply them. This classification ensures that these pesticides are handled correctly and with the necessary precautions to mitigate any potential hazards associated with their use. Trained applicators are knowledgeable about the appropriate safety measures, application techniques, and environmental considerations, which helps to prevent misuse that could lead to accidents or harmful consequences.

The other options do not accurately reflect the primary reason for the restricted-use classification. While some restricted-use pesticides may be costly or require specialized equipment, these factors alone do not justify the classification. Additionally, being biodegradable is not a reason for restricting a pesticide's use; in fact, many pesticides with varying environmental impacts can be biodegradable. Therefore, the emphasis on requiring trained individuals for application is central to managing the risks associated with restricted-use pesticides.