I use hot water to thaw my pinkies, fuzzies and mice. The water in the tap will probably be hot enough but if it isn't heat it on the stove until it is about 140 degrees or so. You won't be able to hold your finger in it more than a few seconds. Dorp the forzen food in and pinkie thaw quickly, large mice more slowly After a few seconds take it out ans see if it si warm to the touch. If not ,put it back, if it is feed it to the snake. I don't put mine in a plastic bag before thawing them out but I know people who do. This keeps the mouse from be soaked. You will learn how long it takes to thaw everything out.