I make sure the day is warm and sunny and breezy.
Lock the girls in the run with water and food.
Open all windows and doors.
Take everything out. Water and food holders and containers for grit and oystershell.
Clean out the litter and put aside for my compost heap. Make sure you wear a mask because you will be kicking up a lot of harmful dust.
Starting at the top of the coop I use a broom to sweep the ceiling and walls down and then sweep the floor. I let everything settle and start at the top again.
I use a steel brush to scrape the roost clean. I never let it get covered with poop even in the winter so that only takes a minute.
I use my pressure sprayer and make a batch of insecticide using Sevin liquid.
I spray the corners, the roosts, the floor and every nook and cranny I can find. Don't forget the laying boxes. I don't have to do mine because I use plastic milk crates and the mites/lice won't live on them.
Let dry again and air out WELL.
For peace of mind I sprinkle DE around the inside perimeter and under the nest boxes.
Add new litter.
Clean all food containers with a mild bleach solution. I let mine soak for 10 min minimum. I let them dry in the sun. Sun is my favorite disinfectant.
Refill food and water containers.
Replace nest boxes and fill with hay or straw.
Clean windows.
Hang up new 2010 chicken calender.
Have a 'beverage' while sitting in front of the clean coop admiring your work and wondering how much Advil you will have to take tonight.
Reluctantly let the chickens back in to make a mess.
Clean the coop again in the fall.
The next day or weekend rake the run and add that material to compost pile.