mmmmmmmmm.....interesting, but cannot understand why anyone would want to use a shocking dog collar. Having had dogs all my life, some naughtier than others, it has never crossed my mind to use one of these. You need to establish yourself as the pack leader, by following basic exercises. Unfortunately I am not the pack leader in our house, but my husband is, and has total control - I would also add that he has never ever smacked them, or raised his voice, and they love him to bits. On the other hand, I have to shut them outside when I get the hoover out as they think it is an alien, and as they think I am one of them, are obviously trying to save me from this noisy monster! - they also bark like crazy when someone comes down the drive, but once frightened off someone trying to steal the car, so who am I to argue!