I went into the coop this morning with flip-flops on (usually wearing boots) and my feet were soon crawling in almost microscopic tan mites. I use the deep litter method with pine shavings. I picked up a few chickens kinda quick to check them and didn't see any in their feathers or skin (again, a quick check). I turned over the entire bedding and found that it was fairly dry, except maybe the bottom-most layer where it was breaking down but nothing beyond barely damp. Nothing else weird living in it, no smell. What do you more experienced peoples recommend?