What's that? You don't smell anything, you say? That's right, because we cleaned the entire run today. I believe it's called mucking. In any event, we dug down deep, threw it over the fence, put down diatomaceous earth and fresh wood shavings. The hens are happy and are taking dirt baths like crazy. We needed to do this for a while now. The earth in the run had become compacted and was not smelling very good on rainy days.