Where are you located? In appears to be not in the US. I have posted this previously, permethrin works well too. I had a mite issue several months ago and I sprayed inside my coops because of the mites. I also had a ton of flies. The permethrin eliminated the mites and as a bonus it also eliminated the flies. What a pleasure it was to go into the coops and not have flies everywhere. Good luck and have fun...
