We live in the Bay Area in CA so can do this, but are seriously thinking our coop floor will be chicken wire, and then the droppings will fall below and we'll be able to scoop them right into the compost. Have framed a 4X6 coop out, 3 nesting boxes, max 6 chickens. The enclosure / run has been very slow going to build, as we dug out a 1 ft trench all around - and then buried chix wire and added cinderblocks and dirt under 4x4 posts to keep predators out, our main concern. Total run is 15 x 15. I read posts where people are asking what to put down - is there a reason to put anything down? A reason the floor can't be open when the area is totally secure? Thanks!