My miniature poodle is 11 months old and has chewed through my whole house doing hundreds of dollars of damage. I have tried everything recommended by you and others and have been unable to break this bad habit. I'm about to give up on him. Any super secrets?
Have you taken your little poodle to the vet to check there are no problems with his teeth? This could possibly cause him to be obsessive with chewing things.
Actually, during the first visits to the vet he said, "Oh, he's a chewer" and that was that. I brush his teeth every other day and they look good. He has a destructive behavior while with me in my home. However, when he stays with others, he gets more interaction with other dogs, as well as humans, and they say he's fine. I walk him daily and play with him a bit, but it's obviously not enough.