I was wondering whether it would be better to line the bottom of the pen with wire, instead of burying sides of the wire in the ground. It would be all sealed off from all predators, but peacock would walk on wire, and I would have to buy a lo ad of dirt. Also is it necessary to put sand down or can he be on the grass and dirt? Will he mow the grass in one week and will it become all muddy? How do I clean all the poop?