I work in Pest Control...You could put out glue boards...This may or may not kill him...if he gets his face stuck in the glue, he will smother..if he doesn't then you can take mineral oil and pry him off(but dont think the snake would eat after that)...to tell where he is look for droppings and they usually stay close to the baseboards when running. good luck


ps..put a snickers bar on the gluetrap...thats gets them every time