I don't mean to put ANYONE"s dogs down- some are chewers- but i've heard that destructive dogs are bored dogs. Maybe a good super long walk? If they are a tired dog they can't be a destructive dog
But sometimes I think they do it almost instinctively. Sometimes Layla will take her Kong and just CHEW it like there is no tomorrow- almost as if she needs to just get it out of her system.