I've had "it" (not sure on sex, but I like to think he is a he) for about a month now. The first two attempts I was using a small rubbermade, and offering a pinkie. Now I have been trying to feed in the tank with a fuzzy and a plate (to protect from eating substrate). I heat the same way, place it under the lamp the same, and then dangle it in front of him. He just ignores it and takes the screen being off as on opportunity to "explore new areas". I think an adult would be to big, he is pretty small still and I don't really think I should offer something that is bigger around than he is.