Stored restricted use pesticides must have what posted?

Stored restricted use pesticides must have a pesticide warning sign posted to ensure compliance with safety regulations and to alert individuals to the presence of potentially hazardous materials. This signage serves as a critical communication tool that informs workers and the public about the dangers associated with the stored pesticides and the need for precautions when handling them. The use of warning signs is mandated by regulations to promote safety around hazardous materials, particularly in environments where non-trained individuals or the general public may come into contact with the storage area.

The other options may address safety but are not specifically required for restricted use pesticides. A warning label is generally found on the product itself rather than on storage areas. A hazardous materials sign typically indicates broader chemical hazards and may not specifically denote pesticide usage. An environmental protection notice might address ecological principles but does not fulfill the specific requirement for signaling the presence of restricted use pesticides.