Which of the following is NOT a sign of a rodent infestation?

Mud tubes in the corners are not associated with rodents; they are a sign of termite activity. Termites build these tubes to provide moisture and shelter as they travel between their colonies and food sources. In contrast, the other options are typical indicators of rodent infestations. Droppings found in hidden areas, for example, are a common sign of rodent presence, as these animals tend to nest and feed in out-of-sight locations. Chewed food packages reflect the feeding habits of rodents, which often gnaw through packaging to access food. Nests made from shredded paper or fabric also signify rodent activity, as these materials are commonly used by rodents to create a safe place for their young and to keep warm. Recognizing these signs is crucial for effective pest control and management.