Hi all. Recently noticed the red mites in my coop. I'm in Australia and I have completely cleaned out the coop and dusted the coop and roost bars with pestene powder. I've also dusted the hens. How long do people so this for to get the mites eradicated. Also, do the red mites travel from the chickens around my yard as they free range most of the day. Just don't want them everywhere. Thanks.