Keeping tract of where he chews and what is chews won't be that hard. Just replace as needed. Hobbs had a favorite area at the top corner of my temporary two by four wall for the indoor aviary. He loved chewing exactly where the two ends of the two by fours came together and he really was dedicated to hollowing out that area where the two peices of board met. I just kept an eye on it so he could not chew his way out and kept replacing a new chunk of two by four in the hole as he widened it. Best toy I ever gave him. Once he got it big enough that he could fit is body in it, I put plywood on the otherside of the aviary and he used to go up there and snuggle into the open area, like it was his own personally decorated home place. To the day he died, he chewed those two by fours farther and farther apart.