Droll Yankees NGT Nectar Guard Tips Nectar guard tips block flying insects from entering the nectar ports and contaminating the nectar of hummingbird feeders For use with all droll yankees hummingbird feeders When insects are a problem, slide the nectar guard tips onto the stem of the feed port after the hummers have gotten accustomed to the feeder Because of the delicate nature of the tips, wash carefully and replace annually Made in the u.s.a.