This feeder is a cheaply made (but not cheap!) knock-off of the Aspects Hummzinger, a much more durable feeder without the yellow parts that can attract attract bees. After problems with Perky Pet feeders, I now use only all-red feeders and find that it doesn't take new birds more than a few seconds to learn where the holes are (hummingbirds are a lot smarter than you think). For the same money or less you can get a feeder that's more durable, even easier to clean, less likely to attract bees, and made by a company that doesn't crank out cheap knock-offs or exploit you and the birds by marketing chemical-laced "instant nectar."