Safe cheap way to keep cat from escaping my back yard. He can jump my 6' privacy fence in a second. Took a while to figure out how to safely stop him. Scared of losing him. Flower Bed Border Fence - Vinyl-coated, 14-gauge galvanized wire. 20ft $9 Unrolled and attached to top of fence. Once secured to fence I hand curved the top inward. My neighbors can't see it above the fence. Later He jumped, touched it, but couldn't get over it or get caught in it. Safe success!