We have had in-ground fencing (SportDog 100) for about 3 years, and originally installed the basic wire that came with the kit. It worked great at keeping our dogs contained to our 5 acres, but after a while we started getting breaks. Lots and lots of breaks. And often we wouldn't realize it until the dogs got out and we got a call from our (very patient and kind) neighbor. So as big a pain as we knew it would be, it was time to replace it with something stronger. The price on this was awesome, and it shipped quickly (oh Amazon, how did we ever live without you?)The new wire took the better part of an afternoon to set up. We didn't bury most of it, just laid it along the ground and used lawn staples to hold it down. We buried the part that crossed the gravel driveway. Our acreage is surrounded by woods, so the underbrush grows over the wire and keeps it nicely in place. So far, so good! No more breaks, and dogs are safely contained.