We have a fenced in yard to contain our 3 large breed dogs. One being a Golden Retriever, named Dozer (notorious for digging, hence the name), and another being a high strung husky. Our dogs decided to become Houdini by mysteriously escaping the fenced in yard. After some investigation, we found holes they had dug to get under the fence in hidden areas. We found these pet barriers and the problem was completely solved with them. They don't even try to dig around these or anywhere along the fence for that matter. They are made of a very heavy and strong metal and show zero signs of rust or wear after several months of use. I would definitely recommend these to keep your pets in and and even to keep critters/predators out.