Squirrel Free’s premium “Original” Wild Bird Seed Formula has been scientifically developed with our patented Pepper Treat™ brand of chili pepper coating technology and tested by scientists at Cornell University. “Original” formula is made from the finest seed ingredients and chili peppers, designed to attract a wide variety of birds while repelling “Pesky” squirrels from your bird feeding environment. Birds love the taste of Pepper Treat™ because they do not taste capsaicin, the natural ingredient that makes chili peppers hot. Squirrels and other mammals do not like the hot taste of Pepper Treat™ Wild Bird Seed and soon these persistent intruders will learn to look elsewhere for food. Contains sunflower seeds, sunflower hearts, white proso millet, cracked corn, chili pepper, and Pepper Treat™. Ready to use, no mixing necessary. Available in economy 24 and 48-pound boxes.