A food worker inspects the floor for signs of a pest infestation. What sign is most likely to indicate a pest infestation?

In the context of a pest infestation, there are several signs that a food worker might inspect for; however, one of the most indicative signs is the presence of droppings. Pest droppings can vary in size and shape depending on the type of pest, but they often resemble small pellets or grains.

Additionally, other signs that may indicate a pest infestation include:

1. Gnaw Marks: Signs of chewing on food packaging or structural components can indicate rodents.
2. Nests: The discovery of nests, often made from shredded materials, can suggest the presence of rodents or other pests.
3. Unusual Odors: A foul smell may hint at the presence of certain pests like rodents or insects.
4. Physical Sightings: Seeing live pests, such as cockroaches or mice, is a direct indicator of an infestation.

Droppings tend to be the most common and immediate sign that a food worker may notice during inspections, acting as a clear indication that further investigation and action may be necessary. Regular inspections and knowledge of these signs can help in maintaining a pest-free environment in food handling areas.