I know this probably sounds silly but double check your cage. Snakes love to hide, and I've near lost it over false alarms several times. Good luck to you..everytime i lost and recovered a snake it was by pure chance I found them...never seemed to have luck with traps. Check closet floors, under furniture, around furniture, baseboards, if you have a northern home with floor vents for heating..there u go. Basically EVERYTHING in your house is a possible hide for a snake, have fun systematically tearing rooms apart to no avail.