My brother has one for his Rat Terrier. He lives on a busy city street and It worked for him. After training Jack to use it ,he doesn't even turn it on now. He keeps the collar on him and he will not go beyond the boundary(during training he got shocked a lot and he knows exactly where the boundary is) For these little guys I am not sure about it. I wouldn't rely on it totally and there is also the danger of birds of prey picking them up. I hope you get more replies as I am not sure I could trust it, and the collar they have to wear is IMO too heavy for their little necks. |