Provide a favorite treat for the tiny fine-feathered friends. This feeder fresh nectar defender is an all-natural product that protects the freshness of hummingbird nectar and stops spoilage. It is bird-safe and works using a micronutrient naturally consumed by hummingbirds in their diet of nectar and insects. It will protect your nectar for weeks, and hummingbirds will enjoy fresh nectar every time they visit your feeder. It will be perfect for attracting those awesome little hummers to your backyard for hours of enjoyment! Features: All-natural product that protects the freshness of hummingbird nectar Helps stop spoilage Protects your nectar for weeks Bird-safe Dimensions: 5.5"H x 1.6"W x 1.6"D Material(s): plastic