I am redesigning my chicken run so that it drains better (it is very wet where I live). The has been just the dirt ground with some pine shavings over it. My husband wants to put in filter fabric/landscape cloth over rocks (for drainage) with a layer of fine pea gravel on top. Has anyone else used this before? The chickens would not be able to dig in the dirt as it would be covered up. Water would drain right through the pebbles and cloth and I would not have any more puddles... though I am not sure what would happen to the droppings.? I was wondering if anyone has had experience using pea gravel?