Ok so I can’t free range my chickens but they have a fairly large run, lately though I’ve been having some time maintaining it. The sand has been kind of eroding in weird dips and when I add new sand it’s gone in a week and it makes it taller and harder to open the door. The run ground is basically not sand anymore just hard dirt packed ground. And my run has started smelling now! Any ideas on how I can make my run pretty again and keep the smell down?