I got the built up hard poop off my chickens butts, wash there butts under running water while rubbing it with a paper towel which seemed to get most of the mites off, then i powdered them with sevin dust. I replaced their bedding and sprinkled a little sevin on it too. Now just wait? Also, since i found the mites on my new chickens it made me check the two i got about a month ago. One was fine but i still powdered her too but the other was covered and it seemed like she may have had lice too because i seen a few larger clear/white bugs on her (i think someone said lice were white). So i got her good. Since the seramas are more then likely going to stay in the house, once the mites are gone should i have to worry about them getting to them again?