I have been thinking that when I get my new breeding pens set up, they willl be 5x12 with 5x8 of that being unsheltered and open to the rain, and sometimes the runs can get a bit muddy and messy and I was wondering if it would work to put a light layer of sand down and then put wood shaving over the top of that. After it rains would the shavings dry back out easily after the chickens start scratching them up? I just want the pens to look neater than haveing just a bare dirt floor. What do you all think ?