Oh boy, I have read tons of posts on tub vs enclosure. I really like the idea of feeding him in the enclosure but I keep coming across the dangers of ingesting bedding and he is currently on aspen. I could maybe try removing his hide and laying a paper towel over the bedding with the mouse on it. He does swing around and move a bit while swallowing, but maybe if I made sure the mouse is very dry before offering it. He did seem pretty preoccupied with slithering out of the tub so enclosure would probably work better, though he did take his first pinky rat in the tub.