Mike that is so strange you talk about them chewing up all the food.
I had just separated the breeding group that I wanted to sell, and put the male back in with the others. He was being a pain the behind with the other males, so we put him in a maternity tub over night to cool off.
Overnight he chewed up ALL of his food, and left these little crumbles everywhere. Then he went and began to chew some of the wood that separates the food from the rest of the tub through the hardware cloth.
The guy went nuts, I couldnt believe he freaked out so much by just removing him into a tub by himself with nothing to do.
So yea, I'm keeping the wheels too!