Boy mice can be problem. But I just recently had a field rat to find a way in my home. I think I finally found the entry point and plugged it. I know it wasn't a mouse as the dropping were too big. It chewed up my new met thermometer and even manage to chew a hole in the sink drain pipe. It about drove me nuts until it ate 1/2 lb of poison bait. Still I just wonder how much other damage it done before I got it.
And Roaches can be very bad it times if the home owner don't use preventive counter measures. You know it is bad when you turn on the lights and the whole floor moves.
