Scratch and Peck Feeds Cluckin' Good Limestone is an all-natural calcium supplement used to increase eggshell strength for laying poultry. Calcium is included in all layer feeds; however, different breeds may require varying amounts. By offering free choice, birds will take what they need when they need it. In addition, if a calcium deficiency occurs, birds will pull from their skeletal system leading to poor health - let's not let that happen! Supplementing calcium is an easy way to ensure strong eggshells and to keep your flock happy and healthy. Cluckin' Good Oyster Shell is another great source of calcium, but difficult to source. Cluckin' Good Limestone is a premium alternative for your flock. Offer free choice to your laying flock as a calcium supplement for increased eggshell strength. Ingredients: Pure Limestone