We have a kiddie pool in our duck run. It has created a nasty mess. We have to dump the kiddie pool out and refill it at least once a week which has created a standing pool of nasty water in the run. I guess the ground got water logged. If I add sand for the floor of the run won't it get washed away when we dump the pool. How do you deal with the mess of the ducks and how can I make this a more clean environment? It's quite stinky.