Which of the following would indicate pest presence in a facility?

• A. Live or dead bodies
• B. Fresh air
• C. Clean counters
• D. Adequate lighting

Answer: (A)

Pest presence is shown by concrete signs that pests have entered or been active in the area. Finding live or dead pests provides the clearest evidence that an infestation is or has been present, which prompts immediate pest-control actions and a review of sanitation and entry points. In contrast, fresh air, clean counters, and adequate lighting reflect good cleaning and environmental conditions and do not indicate pests; they can be present even when pests are nearby, so they aren’t reliable signs of pest activity.