I am not going to get into right or wrong but we used one to get our beagle to learn quiet command. We zapped ourselves on the lowest number and it wasn't bad. We actually never had to shock her since the beep worked perfect. I believe it surprised her and she would look at us. We are fine with her barking to protect her domain but when we give the command quiet especially at o'dark thirty, we expect her to listen. We put it on her for about a week and everything was resolved in that amt of time. It was expensive but worth it. If the neighbors had complained, she could get in trouble.