I had been having issues with my goats hoping the 3 ft fence surrounding my property and also getting into my garden. I purchased this and use the collar that came with it, but also bought 2 aditional stubborn dog collars. The Billy goat NEEDED the stubborn collar. The wire itself is a pain to bury if you don't rent the machine locally. After repeated digging up by my dogs, who are not using this, I have decided to keep my wire above ground in a cheap PVC to protect it from breaks and mark the boundary. It took the goats 2 days to figure out what was going on. They eventually decided that there was nothing of value outside of the area, and they do not test the boundary anymore. If the wire breaks it is really easy to patch until you get a more proper repair, just wrap the bare ends of the broken sections back together and check your loop light is turned back on.