The Big Gulp Hummingbird Feeder features a glass nectar bottle and a colorful red top and base with seven integrated perch feeding stations. The built-in ant moat stops ants right in their tracks, keeping precious nectar fresh for hungry hummers. With a 40 oz. nectar capacity, the Big Gulp provides plenty of nectar to keep hummingbirds happy and coming back for more! The wide bottle opening and detachable flat base make filling easy and cleaning a breeze. When cleaning your hummingbird feeder, do not put your feeder in the dishwasher, as the high temperatures can permanently damage the feeder parts. Most expert sources discourage dishwashing because it may not fully disinfect any avian diseases. Additionally, dishwashers could strip the paint off painted glass components or ruin the finish on metal components and it voids the warranty.