Aspects HummZinger Ultra Hummingbird Feeder - Aspect's newest hummingbird feeder the HummZinger Ultra combines patented Nectar-guard tips with a built-in ant moat. Nectar-Guard tips are flexible membranes attached to the HummZinger feed ports. These unique tips prohibit entry from flying insects while allowing unrestricted feeding by hummingbirds. Also, the built-in ant moat stops crawling insects in their tracks before they can reach the nectar. These two patented features combine to give our HummZinger Ultra the ultimate in protection from both flying and crawling insects while you can enjoy the hummingbirds. Lifetime Guarantee ~Brand: Aspects ~Availability: Usually Ships Within 1 Business Day 12 oz. capacity Easy to clean 4 feeding ports Brass rod for hanging Hang or post mount Built-in ant moat Bee & ant resistant Raised ports divert rain ITEM #367 Nectar-Guard are flexible membranes attached to the HummZinger Ultra's feed ports. These tips block entry to flying insects while still allowing the hummingbirds to feed.