Scratch and Peck Feeds - Cluckin' Good Chick Grit Supplement for Chicks and Ducklings - 7-lbs NECESSARY FOR DIGESTION - Chickens do not have teeth. Grit is necessary for the healthy development of a chicken's gizzard. APPROPRIATE FOR CHICKS UP TO 8 WEEKS AVAILABLE IN DIFFERENT SIZES, DEPENDING ON SIZE AND AGE OF THE BIRD