I have 6 chickens in a 800 Sq Ft fenced/roofed area with sand and they forage constantly. I scatter their pellets and some treats out in the area so they are always searching and finding food. They dig holes in the sand that I have to cover over so I don't break my ankles!I use sand in my run. It's pretty easy to clean, but the chickens don't seem to forage in it much. Suppose this is one of the downsides of using sand. I have 7 chickens in a 100+ square feet run. To clean it I use a plastic rake this filters the sand out, but keeps the droppings that I then put in the compost. It takes me about 15 minutes. I do this each day or so. Not a huge fan of sand, in a while I might change it to fine mulch and have sand just under the roost.