We had the same issue with Bacon although he is much younger. In the beginning when we left him out he knocked pillows on the floor but wasn't destructive. Then he had about a week where he was a perfect angel, followed by two days of him being a complete terror tearing apart couch cushions. Needless to say he is back in his day pen setup again. We found as long as he was tired he wasn't that destructive, but after a few days and plenty of catch up sleep he would cause problems. Sorry for not being too much help at all. Are you leaving toys our for Kirby to play with while you are gone?