This large Nectar Protector is to be put above Birders Hummingbird, Oriole, or fruit feeders. Fill it up with a bit of water and want as you have no more crawlers eating away at your feathered friends nectar. A small hook it included to hang your bird feeder back up underneath. Just makes sure you clean this nectar protector regularly to eliminate insects, bacteria growth, and to keep your feathery friends safe.