For me, I put my frozen rat's in a large old ice cream tub with blue handle in the fridge with the food. It has a nice well fitted lid. When I take out a rat on a feeding day? I never touch the rat with my hand for any reason at all. Frozen or not. I don't want any scent on me at all. I just use a 10" tweezer that I bought from petco to manuever the rat's.