Whether you own a backyard flock or raise champion birds, we know how fulfilling it is to check your nesting boxes and find perfect, beautiful eggs. Avoid cracked or broken eggs with Manna Pro Oyster Shell. Effective and convenient, it helps reduce the number of weak, soft or broken shells by naturally adding calcium to your flock's diet. It's as simple as that! Add Manna Pro Oyster Shell to your mix and enjoy finding gorgeous eggs every time!