All the following are signs of rodent infestation EXCEPT?

The presence of egg cases is not typically associated with rodent infestations. Instead, egg cases are more commonly linked to insects, particularly cockroaches. Rodents, such as mice and rats, do not lay eggs; they are mammals and give birth to live young.

On the other hand, grease marks, gnawing evidence, and scraps of paper are all common signs of rodent activity. Grease marks are left behind as rodents pass through areas, usually from the oils in their fur. Gnawing is characterized by the distinct marks rodents leave on various surfaces as they chew through materials to access food and nesting sites. Scraps of paper can indicate that rodents are tearing materials to use for nesting. Recognizing these specific signs is crucial for effectively identifying and addressing rodent infestations in food management settings.