know that feeling . i have a 2 yr old ridgeback ... and a chewy 11 week old rottweiler girl. just managed to stop her chewing. if you go to pets at home there is a spray apple sour chew spray, or shaws chew deterrent. is smells nasty and if you are unlucky like me and get it on your hands or in your mouth. it taste nasty too. but it works. no more chewing.