I have the same problem with my dog. I got her a toy made out of firehose material. Half of them that I have gotten have a water bottle in them and half have stuffing. Your pit will still be able to tear it up, but it will definitely slow down the time. One can last sometime two to three months without is watching her. Other suffed toys, if we don't watch her and take it away when she starts tearing it, can last up to a week or two if they are lucky.