What does a 'restricted use' classification for a pesticide imply?

A 'restricted use' classification for a pesticide indicates that the substance poses significant potential risks to the environment, human health, or non-target organisms and therefore requires experienced handling. Such pesticides can only be purchased and applied by certified applicators who have received specific training to understand the risks involved and the precautions necessary for safe use. This classification ensures that only individuals who have been educated about the appropriate application methods, safety measures, and legal responsibilities can handle these more hazardous products, which is essential for protecting both people and the environment from misuse and unintended consequences.