In the summer time my run in just dirt and sand. I give them a layer of straw in the winter for added warmth then rake as much of the straw out as I can in the spring. In my coop I use pine flakes. I bought pine shaving once and I agree they are very dusty, after one use I found that Tractor Supply carries both pine shaving and pine flakes. After switching to flakes I would never use anything else in my coop they are very low dust. Give them a try