Stupid me, I never thought of pavers on the inside! Next project!!! My yard looks moonscapish in spots. They have their favorite digging areas. Other areas are barriered off with rebar and plastic netting. Not beautiful! I don't let them out much, as my garden is important to me, AND we have stray and feral cats in the area that scare the girls up on to the fencing, and outside the fence is a precipitous drop down to the creek, and raccoons, so they can't be out unsupervised.