We have a black snake that lives in our basement, and we occasionally see him when he exits at dusk to go hunting; otherwise, he stays in his home in the rafters. The only reason I discovered he was there is because when our plumber was replacing water lines in the basement, he suddenly said to me, "You have a tenant," and pointed to this little face poking out of the crawlspace ceiling. Petrified, I asked him what we should do (BIG snake!) and he said, "Nothing. Leave him alone, he has no interest in meeting you and will take care of any rodent problem you might have." That was three years ago and I have seen him only twice: once, climbing up a tree in our front yard, and the second time, sauntering right by us--beneath our feet-- as we sat on the front porch steps. We've gotten used to him being there and honestly hardly ever think about it.