One of my 12 month old BO hens has ear mites and was treated by a vet today. I'm wondering if I should treat my other five hens. I read about a dewormer that also kills mites and tried a BYC search but didn't find what I was looking for. So, I have several questions. 1) They were all dewormed with SafeGuard last November - is it safe to deworm them again? And 2), can someone give me the name of the dewormer that also kills mites. I sprinkle a tiny bit of Seven in the coop and nesting boxes when I clean which is monthly. I can't stand bugs of any kind and shudder to think my girls have mites - maybe I'm not using enough Seven - since it's a powder I didn't want to risk respiratory problems with too much Seven. Thanks