I think this is a nice choice since I tried lots of pet containments. I can't stay at my home for so long with my dogs, one named Kiki the other is Jojo, because of my job in the weekdays. To be frank, I attempted the woolen fence with nearly 3 ft around my yard. But what shocked me was that they dug down under the fence and fled to my neighbor... On the one side I was so upset with the costly fence, on the other side I can't bother my neighbor again. Then I tried the wireless containment for the first time but not this system. Actually, that was not desirable since the collar was so hard that it scraped off the hair around kiki's neck! I'm so sorry that I did not notice it. After it went through so many products I picked this containment system!!! The collar does not scrape off the hair and now they will back to the safe zone as long as they are near the fence, although the training was a bit long that was interesting.