Hello! We have a flock of chickens(30 -32 hens) that are all different ages. They have had mites every since two winters ago. We gave them garlic, turmeric, brewers yeast, DE.... and that seemed to help. Recently we put astroturf in the nesting boxes to help with the egg eaters and there are SO many mites crawling on the eggs, on the chickens.... Its strange though, some of the younger chickens have hardy a mite on them and some of the older 4+ years hens have thousands probably. I read and article about moving them in a different coop for three weeks and any mites in the coop should die. Is this true? I read another article about mites being able to live for 6 months!!! We have dusted them with DE and wood ash and some of them dust bathe a lot!!! Thank you so so so much! Any advice is appreciated!