I am setting up my brooder for my first backyard flock. I have a plastic tub with pine shavings in the bottom. People have told me to sprinkle DE on the shavings. So I did. then I covered all that with paper towel. I was told to do that for the first few days. Is all that right? I am confused about the DE???? I thought it was to keep the smell down and for sanitary purposes. Is that right? I have day old chicks arriving in just a few days. I want to be sure I am doing this right. Any input?