I just received my 10lbs of DE to use in the coop, and was wondering how much of this stuff to really use? I sprayed a decent layer over the entire run (sand and dirt) and lightly blended it in with a rake. I then added another light layer on top and lightly worked that in as well. But I am not really sure how much of this stuff I am really to use? I heard of adding it to the run, coop boxes, etc... Dusting and such, but never a rough idea of what I should put. I did not really put a lot I thought... Wondering if I should put a top layer and leave it? And once the dust settles let the birds in? (They were out in the garden while I cleaned/prepped the coop). Tonight/tomorrow I am going to clean out the sleeping area/nesting box and add a layer of DE inside with new pine shavings and such... Do I just spray a nice layer inside and fluff it around? Let the dust settle and allow them in afterward? They don't go inside the nesting area until sleep time anyway. Thanks for the help everyone!