I personally used this as a "skirting", if you will, for my fence line to prevent my escape artist of a dog to dig their way out from under. I personally bought the 8" for my smaller dogs but would definitely recommend taller if you have a large digger. It's easy to tap into the ground with a rubber mallet, the edges are smooth so no risk of cutting paws if they do manage to reach the edge. The metal itself is quite sturdy. I bought two for my front yard and it was more than enough! Worth the money, indeed!