Having a snake escape really sucks...they're MUCH better at hiding than we generally give them credit for, & our houses have more hidy-holes than we usually
realize before this happens, so prevention is the best. Kitchens are the most dangerous...there is often a crawl-space under kitchen cupboards (use a mirror on
the floor to check) or snakes may gravitate to the dangerous warmth generated by refrigerator & dishwasher motors. There may be gaps around where pipes go
into walls too (under kitchen or bathroom sinks) & snakes find these places (in walls) to be enticing. If you're lucky, he's in a pile of laundry or under couch cushions
but you'll have to keep looking. If beds or any upholstered furniture has any tears in the lining underneath, guess where snakes love to go? Yup, inside! Take care
to check every time you sit or lay down until you find him...& soon, I hope. Good luck...happy hunting.