Was he eating live b4 u got him? Cause one of mine I've been trying to switch to live and he won't ever strike .. even tho I decided to this at the worst possible time since he is on n off food for the past month but he's 500+ my other 2 boys just mad the switch from mice to rats with no issue at all and there around 200/250 so it don't make sense to me y he won't eat he still young and shouldnt be going on food stike yet ... u should leave the mouse in there for a couple hours put some mouse food n water for it n check every hour or so