I feel your pain! When Leo was in his chewing phase, I kept him either crated while I was gone or only gave him access to a couple of rooms (baby gates work wonders). When I was home, I kept his leash on my wrist so every time he got up - I went with him or made him stay next to me.

Now Leo only chews toys or my underware (which I have learned to put in a closed hamper rather than a laundry basket). I still to this day keep my bathroom door closed so he can't get in the bathroom trash can!!!