Yes. I have previously tried only with frozen thawed fuzzy rats. Which is what he was fed before I got him. When I had tried before, I would leave them in the cage all night. This was before I read that it was better to feed them in something else, besides their cage. He never did eat the f/t rats. So I threw them out, epecially after being out all night. When I went to get some today, the three pet stores around here were out of stock. All they had were pinky mice. So I had to go with a live one. I am going to order some f/t fuzzy rats from rodentpro.com. That way I will have plenty on hand. Thanks.