The Heath Outdoor Products Multi-Grain Stack'Ms Seed Cake is a 7-ounce seed cake that features sunflower hearts, peanuts, white millet, and cracked corn. Our Stack'ms seed cakes are specially blended to help you attract several types of birds to the same feeder. Mix and match flavors to find the perfect combination for your yard. Simply stack Stack'Ms on your Stack'Ms feeder, where they will be easily accessible to birds, but sheltered from the elements. Guaranteed fresh. Don't forget to buy the Stack'Ms feeder (S-6).