Which of the following would most clearly indicate pest activity such as nesting?

• A. Proper waste segregation
• B. Nests
• C. Temperature control
• D. Clean storage

Answer: (B)

Direct signs of pest activity are the most reliable indicators that pests are present. Finding nests shows that pests have found a place to live and reproduce, signaling an active infestation that could threaten food safety. While proper waste segregation, temperature control, and clean storage are important preventative measures that reduce pest opportunities, they are controls rather than evidence of current pest activity. The discovery of nests directly confirms infestation and guides immediate actions such as pest control intervention and sanitation review. Other signs like droppings, gnaw marks, or damaged packaging can also indicate pests, but nests provide the clearest indication of nesting and ongoing activity.