Purina Mills Scratch Grains Sunfresh Grains is a natural blend of high quality grains designed to be fed free-choice to adult chickens, ducks, geese and turkeys to encourage the natural pecking and feeding instincts.  Note that Scratch Grains is a grain supplement, not a complete feed.  If too much is fed, it will dilute the feed intake of complete feeds such as Start & Grow, Layena and Flock Raiser, reducing the bird's nutritional intake and overall performance.  Purina Mills Scratch Grains Sunfresh Grains should not comprise more than 10% of the birds overall diet.