I purchased this for my American Bulldog, who seems to bark at every noise that she hears outside...all day long. I have never wanted to use a bark collar on any of my "yappy" dogs, but as I wok from home on the phone I needed to try something to teach her to refrain from barking. I didn't need anything fancy or too harsh. I got exactly what I needed, I placed the collar on her only 3 times, using only the minimal settings and haven't had to use it since.