I am now trying to decide how to thaw....this is going to be yucky, not the feeding just the preparing of meal. I think use live would be preferable to me, but they say he eats frozen and I see no justification to change that if it's true....I am going to thaw it over night and try tomorrow, as a bag of warm water sounds soggy and nasty. Just got to hide the mouse in the fridge from my husband....he will go on a hunger strike over that one, lol.