Perky-Pet  Hummingbird Ready To Use Nectar ( 64 Fluid Ounces - 1.89L ) Convenient ready-to-use formula requires no boiling or mixing  just pour and go! Made of 100-percent sucrose  an essential energy source for hummingbirds Vibrant red color attracts hummingbirds to your feeder No refrigeration required Contains 64 ounces of nectar