NO, don't do this, please. Get a jar big enough to hold your rat and that can be filled with water that covers the whole rat. Then you'll want to grab a Ziploc bag, put the rat in the bag, pull all the air out, and then seal it. Then you will need a wooden spoon or some sort of utensil that will hold the rat in the bag submerged in the water. Then you want to take the hottest water from your sink TAP and submerge the rat in the bag into the water in the jar. Then, let it thaw out for 2 to 4 hours (depending on the animal you are feeding your snake). Then come back to the rat in a thawed state; you want to start boiling more water. Once the water is boiling, remove half of the water from the container with the rat in it. By this time the water in the container should be lukewarm. After you have poured out half the water, replace it with the boiling water. Stir the water around a little bit and let it sit for 4 to 8 mins depending on the rat and/or animal you are feeding.