I have not gone out and gotten it yet but since I was given the recommendation earlier this week it dawned on my last night that hey I have some compressed air(the kind to clean electronics). It does get his attention and makes him stop. Pet Corrector is cheaper than the electronics compressed air so I will be getting some this weekend.
So anyway if you wonder if it's worth getting and have the electronics cleaner compressed air give that a try first. You don't spray it at them just spray it. I got Bentley's attention to stop barking from down the hall from the living room.