Which item is the third exempt class of pesticides from indoor settings commercial application?

• A. Insect baits in tamper-resistant stations or baits placed in generally inaccessible locations
• B. low hazard and risk pesticides
• C. pesticides with the signal word CAUTION
• D. pesticides with the signal word WARNING

Answer: (C)

Exemption decisions for indoor commercial pesticide use depend on how hazardous the product is and how safely it can be applied. Pesticides labeled CAUTION represent a low level of acute hazard among the standard signal words, so they are treated as the third exempt class for indoor commercial applications. This reflects the idea that the least hazardous products have the simplest, most permissive handling rules indoors. The other items describe different kinds of safety-based exemptions—such as baits placed in tamper-resistant stations or generally low hazard products—but when listing the third exempt class, the CAUTION-labeled pesticides are the correct category.