one of mine gobbles down p/k, but won't touch a f/t... i thaw in a bag in warm water for about an hour, changing the water about 3 times, then warm under a heat lamp... he's struck once, but won't eat 'em. i don't know what it is about them, it makes me wonder if they can pick up on the fact that it is recently killed e.g. some sort of minimal brain activity... i know this is a looney hypothesis but i can't explain it!