I have 16 hens. Each spring I put a few inches of shavings into the coop as a base. Every couple of weeks I add a layer of grass clippings, or leaves, or some type of yard type waste. They love when I add new stuff as they dig through for bugs etc. While doing this they also keep stuff churned up and it breaks down. I repeat this all summer and then in the fall I shovel everything out and spread it over my garden to sit all winter. Then I start that same process over. Something I add some straw in the winter depending on the weather and if the leaves are frozen/wet. etc. Then in the spring before my garden is ready to plant I shovel it out onto the garden and then till it all in. Some people say it is not a true "deep litter method" but whatever, the bedding breaks down into a compost, the coop does not stink and I only have to shovel it out twice a year.