We seem to keep getting mites! It is so frustrating! I am trying to figure out where they are coming from. My girls free range during the day and sleep inside a wooden painted coop at night with sand floor, shavings in nesting boxes. My last treatment was with Elector PSP and ivermectin pour on. Everyone seemed to be doing well so I was happy the Elector must have done the job as it has been a continuous problem. I have treated with Sevin,Gordon’s Prematherin, hi yield garden dust, Eprinex also stripping and treating coop each time. Tonight I treated with the latter two as I was worried about the cold and the Elector spray getting them wet. I was shocked when I picked up a hen that seemed week and tired and it was as if she had an anthill on her above her vent. I could not believe it. Several hens had it that bad and just about all had some except the hens that really do not get mated. So that made me think are the roosters getting it somewhere and spreading to the hens. The roosters sleep in separate large plastic dog kennels with shavings at night. I thought since the kennels are plastic they would not be in there. Thecoop also has been cleaned as sprayed as well. The girls hang out under a large long rose bush. There are some wild birds around but not a lot. We love our girls, they are spoiled and it really upsets me to see them miserable like this. Anyone have any ideas of where these are coming from? Or what else I can do? I plan on in 10 days warmin up the coop and spraying them with Elector psp and maybe another pour on. Any ideas plz let me know. Also has anyone used a mite predator if there is one? We used fly predators before and I’m desperate and willing to try anything to stop this once and for all! Thanks!