Crushed Oyster Shell 5 lbs.

These crushed Manna ProŽ Oyster Shells are a good source of calcium, helping build strong eggshells for your birds. Heat-treated for purity. Guaranteed Analysis: Calcium Min 33.0% Calcium Max 38.0% Feeding Directions: Put in separate container so your birds can choose to eat it, or mix 1 pound in with every 20 pounds of feed.