have you tried dogsports??? casey is just bored thats all, give him a job and he will be happy, try flyball or agility with him, take him to playgrounds and get him to do different things on the play structures, all he needs is a job, they are the same as border collies that way, without a job they will make one themselves, casey is bored with no job, so destroying the house is what he has come up with on his own for a job.