I had a regurge one time when I use to feed outside of the cage. Long story short...I would clean his cage at the same time he ate, I was cleaning and putting everything back in and he finished his rat quicker than normal. I moved him back to his cage and was still adding his water bowl and stuff back in. Later that night I looked in and he left me a gift in the water bowl.....SO now they are feed in the cage and left alone for at least 24hrs.