Where in the world are you?
Exzolt will kill 99% of mites and is a water additive. It's available via prescription from a vet. The active ingredient is fluralaner.
If you can't get Exzolt, Bravecto spot-on works really well too. Also fluralaner based but is topical. I empty a bravecto spot-on (dog or cat) into a fine syringe and administer 0.05ml per chicken to the back of their necks. Works amazingly well and they don't need a second treatment.
So glad I found this post! Occasionally, my chickens have had mites before, my pigeons have had lice. Pigeon lice have been easy to deal with, they're easier to see & fortunately my birds have rarely had them, & if so, only a few lice on certain birds. I rotate ACV & garlic & oregano in drinking water. I've kept Bronco spray on hand. I've used Ivermectin drops on back of neck & the other type safe for drinking water before. I also have DE, permethrin on hand. But...recently I saw nasty reddish mites on a few of my chickens. Not all of the chickens had them, just some, for now anyway. Well, these little bastards are tough! They seem to survive Bronco, ProZap, DE, Permethrin & Ivermectin! I bought some of the dreaded Sevin dust for the Roosters, can't use that on hens laying, but anyway even that nasty dust didn't get rid of red mites! A bath in Lavender Tea Tree shampoo helped the affected bird, but of course that doesn't get the eggs yet to hatch & doesn't do much in the coop. I bought a bunch of this spray from
Manna Pro, expensive & didn't work. So then I scoured the web & learned there's a product called Exzolt, works great, add to drinking water & no issues with egg layers. The only problem is that I'd have to live in UK or Australia to get it. I called Merck, livestock division & asked...they said getting USA approval is being worked on...well, who knows how long that'll take. I asked them about Bravecto, naturally they don't recommend it for any animals other than dogs & cats, for which it's approved, yeah, I get it, no one wants to get sued these days. Meanwhile, my sweet flock is being attacked by blood sucking, vicious, nasty miniature vampire red mites. Anyway, I searched it here & found your thread. Thank you for addressing Bravecto, because I was afraid to try it without reading that someone else had some success without risk of adverse effects on a flock or possible mortality...well, I do want mite mortality, not chicken mortality, obviously. So...it does require a veterinarian prescription. I was thinking the liquid version for smallest cats would work, but I have no cat to take to a vet, to get a prescription for it. So...now what?
I guess I can try to go without a cat & see if they'll sell me some.
If anyone has a suggestion, please share. Thanks!