Royal Wing Ready-to-Use Hummingbird Nectar Bag in Box helps keep your feeder stocked and ready to go. It's an all-natural, dye-free, wildflower-infused hummingbird nectar that can be fed right away, saving you time. The formula is fortified with calcium to promote healthy egg development and electrolytes to aid in the prevention of dehydration. No unnecessary food coloring or harmful preservatives. Complete with an easy-pour spout to make filling your hummingbird feeder quick and simple each time.