Three Stents
Songster
I use this stuff sprinkled on the two poop collection apparatuses, coop floor and coop run. The Horse Staller Fresher, same thing as Coop Refresher but cheaper. First Saturday Lime is another choice as it helps repell flies, mites, lice and other insects
I like it and have used it for years. It doesn't completely eliminate the smell but there is a big difference. I use PDZ on my poop boards (scoop them every day or every other day) and pine pellets on the coop floor, I do a complete clean out twice a year.