Sapphire Labs Nectar Defender - Hummingbird Nectar Extender That Prolongs The Life of Nectar for Hummingbird Feeders - It Works Exceptionally Well During Warm Weather Months - 2 PackBrand: Sapphire Labs Color: Clear Features: STAYS FRESH LONGER: Nectar Defender maintains nectar in hummingbird feeders for up to 2 weeks PROTECT HUMMINGBIRDS: Added micronutrient prevents nectar spoilage with zero artificial ingredients EASY: Add a little to your hummingbird nectar mix, a better alternative than ready to use nectar HEALTH AND WELLBEING: No dyes or artificial ingredients makes for healthy, happy hummingbirds HUMMINGBIRD RECIPE: 1 part