I've used the bottle/cone method twice. Didn't work either time but that could be because my snakes were no where near the traps. First time was when two of our snakes escaped the same night. Found Shadow 3 weeks later crawling across our foyer floor as we came home (Sparks is still MIA). My little ghost, Sweetheart, escaped last week and I just found her the other night. She escaped upstairs, in my boyfriend's room and I found her downstairs, crawling around by the kitchen (halfway across the house). Go figure. She was heading towards the stairs so who knows, we might have caught her that way. Whether or not they have worked for me I always put them out on the off chance that it would work that time.
~Katie