With a 30 fl oz nectar capacity, the Perky-Pet 30 oz Best Plastic Hummingbird Feeder plastic hummingbird feeder will assure there's always enough nectar to go around. If you have lots of hummingbirds in your area, then this is the feeder for you! The wide mouth opening on the bottle means that it's easier to fill and clean. The 6 feeding ports all have built in bee guards to keep those pesky bees away. The built in ant moat can be filled with water to keep ants off the feeder and out of the nectar. This feeder comes with a without charge 1.3 oz packet of instant nectar concentrate, which makes 8 fl oz of nectar! The easy to clean base comes apart and every nook and cranny can be scrubbed to make certain your hummingbirds only have the freshest of nectar. To avert mould buildup, remember to clean your feeder twice a week with a mild soap and water solution.