I have 5 chickens in my backyard coop. They have a run area that is about 60 sq ft and it has a sand floor. The sand seemed to be great for the first 8-10 months or so, then it started getting gross really fast. I was scooping out poop and raking up feathers but then it got to the point that it wasn't possible to remove everything without digging up ground. This past fall I had to replace all the sand because it was so caked and gross. Now, its only been about 3-4 months since I put in the fresh sand and now its just as bad. Is there something else I should put down that would have better drainage? I have considered pea gravel, but if it gives me similar issues it will be even harder to remove. What do you like to use as substrate for a run and how often does it require cleaning/replacing? I would like something that I can just rake the poo and feathers off of, and have the material left behind. For those of you that use sand, do you have similar issues? If so, do you end up replacing the sand every few months? This may be a battle I cant win, but I thought I'd try to get some other opinions.