Scratch sold in stores is pretty icky, as we all know. So I now make my own. I combine: BOSS (black oil sunflower seeds) brown rice (uncooked) other whole uncooked grains (try wheatberries, barley, etc) rolled or steel cut oats Toss in the run and stand back! Much better for them than the corn-based scratch and they can still have fun searching for it. This isn't cheap--it's for folks like me who treat their chickens like pets not for those who are trying to do it on the cheap.