Start your search at the enclosure and work your way out from there... Look under dressers, in shoes, basically anywhere dark and tight-fitting for him to hide. Also, look under anything that puts off heat. Most of the time you will find an escaped bp within a few feet of the enclosure. The one time mine got out, she managed to slither under my closet door and I found her hiding in a backpack in the back of my closet...