I have 8 dogs and not until I got my last 2 pups did I have a problem with little "beavers"!! Mine chewed on the corners of my kitchen cabinets, their dog stairs, the baby gate and scratched a hole in my drywall in the hall!!!

They have a million toys, chew treats, kongs, and forever chews so they can't be bored, I think they just get a taste for it and think it's fun. I sprayed the bitter apple on the wood and they seemed to like it too!! They are now over 1 year old and I think they are done doing it, all their teething is done. Good Luck, couldn't help you but I understand your pain!!