We have a crawl space under ours, and we found snake skins during pest control. Seems the absence of mice the last few years isn't because we were more vigilant? You should have seen the face of the cable installer 1 1/2 years ago when he finished installing the cable internet and I was conversing with him afterwards. He was telling us of some of the things he's run into under peoples homes, I casually said we had found a 4 foot snake under their in the past. He literally looked like a deer in the headlights and turned white! He left shortly afterwards, quickly. I wonder what kind of a run-in with snakes he had in his past?