Attract a variety of butterflies with this 12 oz. capacity feeder and fruit trays. Built in ant moat to deter pests. High-impact polycarbonate construction. There are several ways to attract butterflies. First, color is important, since they react to strong ultra-violet reflections. Next, they take the nectar from flowers, therefore, a nectar solution attracts. The Flutterby is designed to accommodate butterflies, while keeping out bees and ants. It is known that overripe fruit attracts some species of butterflies; therefore, space is provided in which to place fruit.