I recently noticed mites crawling in the chicken run. -haven't seen any signs of 'em in the coop/nesting boxes nor on my birds. Obviously if they're in one place, then they're probably in/on the other two. I've read that Orange Guard is good to spray in/around the coop. What is a good mite remedy for the birds besides DE? I will not use DE due to respiratory issues. The birds take dust baths regularly, but need something to help eliminate mites from their environment. Suggestions?????