Spray Commander - When you are not around, no bad behaviour to be found.

Dogs live in the now. Because of his notion of time, he has difficulty associating a behaviour to something, which has happened a few seconds before. No matter how far away your dog is, whether he believes you are there or not, the spray has an immediate effect, that is, a direct link is created between the spray and the bad behaviour, simply because the spray is used at the precise moment bad behaviour is displayed. It is no longer necessary to use a loud, angry voice with the dog, or to strike him with a leash. A fearful dog is not one that is receptive to training. The dog readily associates the disruptive effect of the spray to his behaviour, and not the master.
 

With Spray Commander the dog no longer fears the master, nor is he confused of what is not permitted. A relationship based on rewards is by far healthier than that which is based on verbal or physical correction.