Thanks, Sunnie. I have heard of that before. Unfortunately, that wouldn't really be an option for me, because I don't keep live rats on hand. I just buy them one at a time from a local pet store on an as needed basis. The amount of frozen rats that have been getting wasted lately is starting to be a problem. I don't know what has been going on, but 4 out of my 9 snakes have been refusing food for about the past month. I will only re-freeze f/t rats once each, so a lot of rats have been getting thrown out...