wow...ive lost my bp twice, but not in a hole or pipe. best thing to do would be to keep the room warm. possibly buy a few mice and put them in a small container , small enough to make a scent that the snake can pick up. put that by the whole. i lost my bp twice, second time he showed up in my mouse breeding room, right under neath the rack with the mice. on the far side of my house. put some flower on the floor at nights, that way if he does come out, you'll be able to see his tracks. best of luck to ya.