I get the snazzy pellets. They have no chemicals or fillers. Just pure pressed wood. The cost me 2.00$ for a 40lb bag at my local feed store. They are very easy to clean out. I just scoop it out like cat littter. It's too big for the chicks to eat and soaks up any spills. Which is nice becuse the chicks stay nice and dry untill I get a chance to scoop it out.
My local feed store reccomend it. They keep all there chicks on pellets.