Nectar Guard tips easily slide onto the feeding ports on the underside of the feeders cover. The flexible membrane in the center of each tip easily opens when hummingbirds insert their beaks to feed and close up tight when beaks are removed.

These create a barrier flying insects can't penetrate.

Nectar Guard Tips work with the following products: HummZinger Ultra 12 ounce Little Fancy 8 ounce HummZinger Fancy 12 ounce HighView Mini 8 ounce HighView 12 ounce HighView Excel 16 ounce HummBlossom-Rose HummBlossom-Plum