Why do you think they are there? Yes, mites are common- but you CAN see them, or at least their poop. Roost mites come out at night- go out late at night with a flash light and you will see red/grey/black pepper spilling out of cracks in the coop and crawling up the chicken's legs & feathers. During the day- the cracks can be identified by the grey/black specks (poop) covering the cracks that the hide in during the day. If you are pretty sure you have roost mites (see them or evidence, or pale birds, or birds that don't want to go in their coops at night)- you need to clean the coops out, spray crevices/cracks with pesticide and seal/paint cracks over to decrease mite hiding places. Repeat q 2 weeks for a few cycles, then inspect monthly for reinfestation- as they DO come back.
Quote: