I read about using coffee chaff instead of pine shavings on Mother Earth News : http://www.motherearthnews.com/Happy-Homesteader/Coffee-Chaff-Chicken-Coop-Litter.aspx I called our local roaster and picked up two bags that they were happy to get rid of. I dropped a few pans full in their brooder and watched the antics. This smells SOOO good! It's fluffier than pine shavings, so be ready for puffs of coffee chaff & smells to fly through the air. They went to town! They were dust bathing and now smell like mocha Java! I'll give it a few days and see what "cons" there are. I did see some beans that they carried around, though no one was eating them. I wonder if when they are bigger and eat the beans and then lay eggs I would get my caffeine rush without drinking my coffee??? LOL!