Sorry to hear. You might be able to talk to Kara at neerd, to see if you can buy mice from her. Maybe order enough for a month or two. You could trade her the F/T mice aswell. You could also breed your own, but if you don't plan on getting more snakes in the near future, you could be over run.(lol)Try rubbing a rat pup in mouse bedding, then offering it to him, could work. Or you could rub mouse brain/blood on the rat. Good luck with him!