This is the old-fashioned stuff I love to do, and I have had some inquiries, so I am posting the recipe: Why do it? It prevents lice and mites, and has a small-antibacterial effect. Whitewash recipe: For one gallon: One gallon warm water, mix in two cups table salt til dissolved. Add and mix throughly: 7 cups HYDRATED lime (garden or feed store). You can add maybe 1/4 cup elmers or wood glue. Helps it stick and last... Mix and keep mixing as you use. The lime can settle out pretty quickly... Slop it on well..roller, big brush, rags....get in all cracks and crevices... Dries more quickly if weather is warm....I even did the ceiling of the coop... Goes on clear, dries white! People do this once a year during coop clean-out!