I have 12 chickens and 4 ducks in a run that was 10x23 but we have just shy of doubled it arouns the back of the coop. They also have access under half of the barn. We have a small garden pond in the for the ducks. We have been getting a ton of rain lately and the run smells aweful. My dad was over and he thought it was rhe coop but when he walked in to look at the chicken jail we just added all he couls smell was the pine shavings. So its clearly the run. What can i do to get rid of the odor or at least tone it down? We are processing two of the ducks this weekend. The other two are too small. After they are gone i dont mind removing the pons if it will help. I keep reading sand but their coop is on a hill and I am afraid it will just get washed out in a heavy rain. :/