My question is this: I know buried hardware cloth works to keep out predators. And I see that some people just lay the hardware cloth on top the ground and then use patio blocks on top as a deterrent. I want to know if I sink the base of my pen into the ground about 3 inches (the treated boards are 1 x6 so this would leave a 3 inch height above ground) and then butt 12 to 14 inch patio pavers right up next to the base of the pen sinking them level with the ground----is there any need for additional wire underneath the pavers? I have read that animals will dig next to the base of the pen--and that will have the patio blocks butted up next to the base. They surely won't dig out the pavers will they? Anyway---has anyone tried just the pavers or maybe a 12 inch collar of poured concrete on the outside of the base of the pen?