I discovered just over a week ago that I have mites in my run (interestingly, I don't see any on the birds or in the coop itself). I have removed every bit of ground cover from the run and used an entire bottle of 5% Sevin dust and an entire bag of DE over the last week. I have also dusted every bird I'm able to catch and but Sevin in the favorite dirt baths. All that and there are still mites!!! It hardly looks like the Sevin has touched them. Does anyone have any other suggestions?