I've had my chickens for a year now, and last summer I was amazed at how they didn't really smell bad. I do clean the coop each week, and use a cultivator in the run to keep the earth turned over. Last year I also used a tarp when it rained to keep the run dry. Last week we had torrential rain overnight which I wasn't prepared for and so didn't cover the run (yes I know, I'm babying the chickens! ). Since then, my heavy clay soil is having a hard time drying out, and the smell when I turned the soil over last weekend almost knocked me down. It definitely was worse once I disturbed the soil. I've searched on the site for solutions and am confused about how many suggestions there are. Maybe someone out there has clay soil and found a solution. The run does drain - no puddles. Thanks.