Keep bees and flying insects out of hummingbird feeders and reserve the sweet nectar for the hummingbirds with Droll Yankees Nectar Guard Tips. This package of 12 red tips keeps feeders fresh and pest-free for a long time. Simply slide them inside the ports of a hummingbird feeder from the underside of the cover and they're ready to go. Easy to use and the hummingbirds will be thankful!