Sooo... I just picked up a rainbow that has been eating frozen thawed, so I'm trying to switch my ball over. Last week the rainbow ended up eating both rats, last night neither of them ate. My question is: How long can a thawed rat be kept in the fridge to be offered again? I took them out of the tanks after about 90 minutes. And any tricks for getting a ball that's used to live food to eat a dead rat? She just stares at it. I've tried making it warmer, tried wiggling it- nothing. I've never fed frozen/thawed before, any help will be useful.