In my coop at home, we just have gravel and it works fine, the chicken poop kind of just dries/decays. But we have just 5 hens and are fine with giving it a lot of attention. I am trying to get a small flock going at my school so I'm wondering what to put on the ground. I haven't decided where the run will go, so it may be on either grass or dirt. Do you guys recommend hay or what for covering the ground in the run? I want it to be the least smelly, least work-intensive possibility because I am graduating from my school this year and it's all going to be completely volunteer-run after I go and I know people are going to complain as much as possible about stink etc. Any suggestions?