HI, I found one of my new 4 month old chickens to have red mites. I also have ten 3 week old chicks. Can I dust the babies with permethrin poultry dust? What is the youngest age you can use the dust on chickens? I bathed the infested chicken with cat flea and tick shampoo, and once she dries I will dust her. Then, I must do the whole coop....ugh.. I HATE BUGS!!!!