This is my situation. I am having my above ground pool removed soon, never use it anymore and can't afford to run it anyway. Well of course under the pool is a ton of sand. My chicken coops and pens are on the side of a hill and all the water runs off into the pens which can literally create a pool of it's own never mind a mud hole and then it proceeds to stink to the high heavens until it drys out. I am thinking of putting all the sand in the pens figuring it will be better than mud and will hopefully drain better. Those of you that have sand runs, do you like them? I think it will at least solve the problem that I have now but also I do not want to create another of some kind. Any input will be appreciated. Thanks so much.