When we first brought our girls home, they had mites. We stopped by the feed store and got a bag of food grade DE which I sprinkled on their bedding (we use straw since the climate here is so dry) and in their dust bath. Mites are gone. We continue to put a little in each place when we supplement or change and haven't seen a bug since
Lots of folks say it doesn't work, but it sure did for us. It's not a "quick fix"...does take a little time, but once they were gone and with just a little maintenance, they remained bug free. We also use Sweet PDZ in the coop and that stuff is miraculous! Even though the coop's enclosed, it smells less in there after 2 weeks than the run does in 2 days! It keeps everything nice and dry and keeps the poo smell at bay.
