For my brooder I use the fine pine shavings from TSC. The flake doesn't pack down well enough. Gets all in there food and water. Use the flake for the bottom of the hen house. Don't like to use straw as mites will bed in the hollow straw in the summer. But I do use straw for the hen boxes. I clean them out a lot so don't worry about mites. Plus the hens like it better.