So I am almost done with my coop but now realize I never decided what I was going to do as far as the ground for my run. I will have a small flock of 3 hens and they will have a 40 sq/ft run to play in. Currently the run is grass (well snow at the moment), and since I rent, I need to be able to return the area to grass when I leave. I know with a smaller sized run like what I have, the ladies will tear it up in no time, so I need to figure out something that will be easy to clean up when I leave which essentially gets rid of the possibility of sand. At least the soil under the run will be extremely fertile for replanting when I leave!! What would you recommend for the floor of the run in this situation?