Mess in the grass
We have small areas all over our backyard of grass with roots dug up..no tunnels or paths by our fence or home..The patches are about 4to6 inches square. We have Raccoons & lots of large Crows. Would rats do this?
Washington wildlife damage management
Likely crows, skunks and raccoons often pull back turf to feed on insect larvae. I have not seen rats do this but it is not out of the question. What county are you located in? Can you send pictures?