Check the TV, xbox power cord, hot water pipes, behind books, anywhere small and dark. I had a girl get out once and I found her in a tiny box that a thermostat came in the week before. She was just poking her head out to see what was going on! It sucks waiting for them to turn up. I've heard of people using duct tape. you can ball it up or lay it down near a feeder mouse or hotspot over night. Its a pain in the butt to get off the snake but with a bit of olive oil and some patients it will come right off.