We have 2 GRs. 1 is 4 and the other 1 1/2 yo. We have a wood fence, added the underground Dig Defence (imagine large forks stuck in the ground around the perimeter), cinder blocks in holes, etc. They still find a way to dig out...move blocks, bend barriers. They want to go to the pond across the street. We're at our wits end just to let them out in the morning to potty, today they moved blocks and went out. Fortunately, this morning I got them before they ran to the pond and around the neighborhood. So far the only thing we haven't added is the wireless fence. I ordered one and hope we can get the messagw across to stop. Any other clever ideas welcome. We at with them, etc. Plan to increase walks.