Here you go:
https://www.backyardchickens.com/threads/whitewash-the-inside-of-your-coop-recipe-cheap-and-easy.1096237/page-8#post-17843587
Let us know how this goes or any other questions! Pics were GREAT!
You can keep a cage separately in case you need to break a broody. Complete cleaning and hosing out. There is a product called Oxine (look on Amazon?) that is safe, or other folks use a diluted bleach spray. I just don't like bleach.
It would be incredibly helpful if you knew the history of...