this may sound crazy but it worked for me. first of all he probably didnt get far so just make sure the room he was in last is secure. i couldnt find one of my snakes for almost a month. after tearing apart the room i thought it was hopeless, but then i got the crazy idea to carpet my room in newspaper so if he was to move around throughout the night i would hear him. (remember these snakes are nocturnal) one night i just laid in bed with my light off and sure enough i heard him moving around... GOOD LUCK! keep us posted on how it turns out.