Years ago I had a setter and no amount of training would get her to come back tried everything and was worried for her own safety I hired one from a company advertising in H & H one small shock later she came back every time, I only used it for a week and once she had a shock just the bleep was enough to recall her and she never needed anything again for the next 11 years she was perfect in the right hands and right situation they're a good tool but I think they get misused in a lot of cases