I have only 3 hens, who are in an admittedly smallish area (4x8 run, plus 4x2 coop, for 40 square ft total - they do get out to free-range in the yard on nice afternoons). They have scratched their run right down to bare dirt, and kept digging. And of course they poop. As it is bare dirt, I have not raked or otherwise cleaned that. Now, the rain is beginning, the run is poopy mud, and the rain will continue through....next May or June. My husband says "it stinks". My daughter says "it stinks". I have a poor sense of smell and have to trust them on this. All I smell is a not-unpleasant vegetation/maybe composty kind of odor. Can any of you give suggestions on how to keep the smell down, in a rainy environment? I saw the post about having the run be sand, with a sifter, but while that works with dry sand, I'm not sure how well it works with sand that's rained on 9 months of the year.