The Wireless Dog Fence gives Dozer total yard freedom. He knows his boundaries and sits for his collar before going to the yard.We think it is a great investment and gives us peace of mind knowing he is contained within our yard as we do not have a fenced property.Prior to the wireless fence Dozer was attached to an upstairs lead and a yard running wire. Being a Blue Heeler,he chased anything that moved including cars and at that point we seriously thought the Wireless fence was the way to go. Thanks to your Staff, who made it all too easy and the online tutorials gave us different options. Many thanks from 2 happy customers...Ailsa and Don.