I was told sometimes baby dumerils are kind of hard to get started on food. No idea personally though. I too just wiggle the F/T hopper above Luna's head and she shoots out of the aspen and grabs it. Sometimes if she is asleep, I have to dig a little bit of her out of the aspen to wake her up but she always is right on top of the mouse when its hung above her head. Did you make sure the baby was eating when you bought him? Sorry your little man isn't eating.