Get information from Pestworld.org and pest control tips on roof rats. … Noises in the attic or house walls and disruption are other typical signs of an infestation…. In locked containers, make sure to also store pet food and other dry food. … In particular, roof rats are food hoarders, which means that they are known to stash.
Some of the insects we find in cellars appear to be those that used to live back in the day in caves, so they could live in our houses.