Search each part of the house room by room if you don't find them in there close the door and make sure there's no way a snake can get in or out. Remeber snakes can climb and are good at it. So don't only look at the lower part of the room look up like on cabinents up in closets and etc. Don't lose your cool just slowly look for him. Selling everything you have if you're upset by a thing that is as little is kinda childish. Go look for him take your time in each room too.