Better Digestion. Stronger Eggshells. Healthier Hens. Barnyard Bistro Poultry Grit is a dual-purpose blend of durable traction grit and calcium-rich ground limestone designed specifically for mature laying hens. It supports proper digestion, helps birds efficiently break down feed in the gizzard, and provides a natural source of calcium for stronger eggshells and healthy bones. Ideal For: Mature laying hens, Birds consuming whole grains or scratch, Backyard flocks, and Free-range chickens.