Mites can cause a lot of problems it left unchecked. First they are blood suckers. Second, they reproduce fast and can cause the air quality in a nice dry coop go down fast. I had a outbreak 2 years ago. Little red mites. My chickens where having breathing problems and started losing weight. At that time I was not taking out perches when cleaning. I was just cleaning the floors, dusting the walls and scrubbing the perches in place.I went through this in February, for unknown reasons I had the same responses you are having with my Hen, Lady...I still don't know, maybe female problems. She was only about 2 yrs old and it came on so suddenly and only after a rescue of a Rooster which I got rid of soon after.. She'd just stand and stare and then sit down like she had no strength. It was very painful to watch her go down hill so fast. 5days I think. I was holding her when she passed away. Heartbreaking. She was the Hen in charge until the Rooster came along. Could be a coincidence, but I thought maybe he had something. Later I was told he had leg mites and Lady did show signs of mites or something? on her face and she'd never had them before. So who knows what else he may have had, Thankfully none of the others got whatever she had.![]()
So one day as I was cleaning the coop, I noticed little red spots on the end of the perches I was scrubbing. I removed that perch and discovered a colony of mite living in the cracks of the joints. I was horrified. Then I was on a mission. I removed all the perches and power sprayed them with bleach. Then I power sprayed the inside of the coop at all the connecting points. That is where they where living. It took most of the day for the coop to dry back out and my hens were not happy with me. Just before the sun set I put all the perches back and put seven dust in the joints and cracks. Just in case I missed any. Then before putting the hay in the bottom I put the dust on the floor under a thick pile of hay.
I added vitamins to the water and add the 22% protein layers pellets. by the end of the week they where almost back to normal. It took a couple weeks for the egg production to come up.
Now, part of my cleaning routine, I add seven to the joints, cracks and under the bedding. No mite or any other bug problem since.