Oh wow, I can't even imagine. That would be horrible. Our current house had been vacant for a while when we first moved in it. I was laying around one day and I heard something up in the attic. I decided to put a couple of traps up there and I swear we caught at least 30 mice that first winter we lived in the house. I still have the traps up there and I check them occasionally, but they are still baited and haven't been touched for years.