I agree kennel them up and give them plenty of supervisory excercise and training. A working animal is a happy animal. People always tell me that thier dogs are wandering off and the vets tell them to get them neutered or spayed especially the males. Since I have been training these dogs an average of 3 to 6 days a week my dogs don't run or wander. the reason why the run chew on and destroy stuff is they are bored. give them something to do (a job) and you should see a change in attitude.