I am currently feeding a small adult mouse to my ball python. I buy them in 6 at a time and they come individually wrapped in a sealed plastic bag. I will then fill a glass of hot water and let the packaged mouse thaw in the water for 15 minutes. In 15 minutes the mouse is thawed. Because the mouse will be damp I then dry it with a blow dryer for a minute or two........the blow dryer adds heat to the mouse. This is what works for me.