Now you can help the earth as your little buddy does his best to pollute it! Bags On Board Corn Starch Sustainable Pickup Bags and Dispenser are 40% corn starch, making them sustainable and . Each leak-proof bag measures 9 by 12 inches, big enough to hold a handful of yucky dog dirt while keeping your hands yuck-free! Our easy dispense box makes storage convenient and the 450 bags inside easily accessible.