Coarse wood chipping is the best, IMO.
Has worked well here but I do have sandy soil that drains fairly well, tho I have had to dig a few trenches to control run off....and I don't have ducks, that's a whole other ball game.
I also have a place to store a large load of chippings that I got from the tree trimmers.
My runs have semi-deep litter(cold composting), never clean anything out, just add smaller dry materials on occasion, add larger wood chippings as needed.
More pics here:
https://www.backyardchickens.com/gallery/albums/runs.7427859/
Has worked well here but I do have sandy soil that drains fairly well, tho I have had to dig a few trenches to control run off....and I don't have ducks, that's a whole other ball game.
I also have a place to store a large load of chippings that I got from the tree trimmers.
My runs have semi-deep litter(cold composting), never clean anything out, just add smaller dry materials on occasion, add larger wood chippings as needed.
More pics here:
https://www.backyardchickens.com/gallery/albums/runs.7427859/