Hi everyone, So many suggest sand in the run. What kind a sand? There's play sand, mason and concrete. I live in Northern Fl and the ground is a mix of sand and dirt, (I think). I have an open run with a tarp over it. The run is 8x20x6ft high. The duck share the run with the guineas, they have separate sides. They free range all day and are lock in their run at night. I've been hosing down the run everyday, but the ground can take just so much water. As you know the ducks are really messy. I'd like to order a truck load of sand but don't know what kind. Any advise would be help full.