I went to the feed store yesterday to ask about mite cures. They tried to sell me DE. I have tried that and nothing. He said mites were just like fleas and you would need to treat every 10 days for a month. He also said to completely clean out the coop with bleach let it dry and then cover the coop and run in DE. Its not effective after its been wet, so if it rains add more once its dry in your run. Add DE in your dust bath. I have done this! But just nooded my head. I then went to Walmart for Sevin 5. The girls and the coop and the run got a light powdering of it. Guess what, not one mite found today.. I will retreat at day 10 and watch health closer to make sure I didn't kill my girls with this harsh chemical. I'm hoping I did the right thing but maybe I'm just over thinking this just like everything else.