Bests & Worsts Reviews from Amazon

I took quite a bit of time setting this up, following all the directions to the letter. Our property is perfectly flat and there are no large metal objects interfering with the transmission. Nearest the road, where we are most concerned, there is no signal at all in certain areas, so we do not relax when we let her out, constantly watching. This defeats the purpose. During the training sessions, I put it on the lowest setting as instructed and she yelped and jumped high in the air when she reached the perimeter. I tested it on myself and it was pretty brutal. I wish I could send this back, but first of all, they packaged it so you have to destroy (shred) the box to open it. More importantly since we were very motivated to make this work, we hung in there trying different locations and settings and alas, it is past the return date. This is very reasonably priced if you're lucky enough to get a properly functioning unit, but expensive for a lemon.