Near my back door is an odd shaped area between the walk and the driveway. About 2x3 but curved. It was dirt when we moved in. When we got Sam the lab he found out the wire for the invisible fence runs through it. I do not want him to chew through this wire. We dug down, put wire mesh over it and covered up. He ripped up the mesh. We dug down, put down more mesh then rocks. He dug up the rocks and ate them.
I now have a piece of plywood on it with a cinder block over it.
Any suggestions that are not of the "fill it in with concrete" variety?