Restricted use pesticides are defined as those that:

Restricted use pesticides are defined as those that are considered potentially hazardous due to their toxicity or environmental impact, requiring users to have special training to apply them safely and correctly. This training ensures that applicators understand the risks associated with these products and know how to handle them in a manner that minimizes potential harm to humans, wildlife, and the environment.

In the context of pesticide regulation, the designation of "restricted use" indicates that these products may not be suitable or safe for general public use without the proper education and knowledge. This requirement promotes responsible usage and aligns with efforts to protect public health and safety.

The other options suggest scenarios that do not accurately capture the essence of what defines restricted use pesticides. Some options imply limitations based on urgency or accessibility rather than the focus on competency and training for safe handling and application. Understanding these distinctions is crucial for anyone involved in pesticide application.