Originally Posted by Jonny2184
That's a bad idea. You shouldn't leave a live rodent in a snakes cage for longer than 20 minutes or so while supervising them, however you can leave a rat pup in the cage overnight without worry.
What have you been feeding your snake (size, type, fequency)? Also, can you describe your setup. Most of the time when a Ball refuses to eat it's because of a husbandy issue or they were fed too much and have stopped eating to "catch up".