Fly & wasp traps are an effective, chemical-free way to keep pesky insects from spoiling your outdoor fun. Fill any two-liter bottle with sugar water, screw on one of these tops and hang from the built-in hook. Traps lure annoying flies and wasps ... then capture them so they can’t come back to bug you! Perfect for backyards, decks, barbecues, picnics, camping and more. Reusable and eco-friendly. Set of 6. Ea. 2-1/4" H x 1-1/2" diam.