Overall, we live in a pretty clean city, so we don't have the mites for roof rats to carry disease. But they can gnaw electric wiring and do a lot of damage. |
They're kind of invisible, since they creep into neighborhoods through utility lines. So people may not realize they have them until they've done some damage. |
We're already getting some indications that they're moving west, since some have been spotted in northwest Phoenix. It's inevitable that roof rats will appear in all parts of the Valley. |