You can see my previous post if you'd like for background... https://www.backyardchickens.com/forum/viewtopic.php?id=398241 But basically I've got a ton of red mites in my basement from swap chickens. Now they're upstairs! I didn't get a chance to burn the rest of the original brooder box (thanks to work and on call) but I spread Sevin Dust all over it and the floor, box and the 3 chickens in my basement that same day. I had previously used permethrin and used some that day as well. The kids are in a new cardboard brooder about 10 feet from the old one and so far, I can't see visible mites on their new box or on them. However... The mites won't die. I came home to this: No, that's not water. That's mites. Look close (and yes, I had spread Sevin dust all over, it's like they ate it): And now, they're upstairs. I don't have chickens upstairs. They're in my meal worm bins upstairs and my Shipyard beer just happened to be sitting next to the meal worm bin and the mites are all over it and the floor surrounding it. Very easy to see. The Sevin didn't kill them. The permethrin didn't. The oral dose of ivermectin/praziquantel I gave to the kids 3 weeks ago didn't kill them. What gives?! HELP ME PLEASE!!!!!!