If you are talking about fine wood shavings, like pine shavings, that you use in your coop, then I would say no. Most people have not had good experiences with that in their run. Now if you are talking about wood chip--the coarse material that is created when tree branches go through a chipper, that is a different story. I use that completely for the bottom of my run, a good thick layer, and am very happy with it. My hens never have muddy feet, and it rains a LOT here. You could also try bark mulch, but that you would have to pay for. Try an area of your run, and see what you think, if you have a large run.