Your hummingbirds will love the Perky-Pet Premium Ready-to-Use Hummingbird Nectar! This 100% sucrose formula is packed with the energy they need to keep them going. As a ready-to-use nectar, all you need to do is pour this nectar directly into your feeder. There's no boiling, mixing or measuring required!Since this nectar features a 100% sucrose formula, you're also serving your hummingbirds the best possible sugar. Sucrose, unlike dextrose or fructose, is more like natural flower nectar and easier for hummingbirds to digest and convert into energy. As a Premium formula, this nectar has a higher concentration of the 100% sucrose formula. With a higher ratio of sugar, your hummingbirds will really love it! Size: 64 ounce Ready to use Premium ultra energy formula 100% sucrose formula Ready-to-use; just pour into feeder Higher ratio of sucrose to water No boiling required No refrigeration required No mixing required Bottle.