I am really glad I decided to get this. I keep it filled with black oil sunflower and safflower. The birds were shy at first but now my house finches and American goldfinches are glued to this feeder. I even have birds squabbling with each other just to get in. The suction cups are heavy duty and has survived many windstorms. Great product and you get to see birds up close.
I purchased 2 of these feeders and within 48 hours of putting them up had a multitude of birds feeding. I used black oil sunflower for best results. The feeders are super easy to clean and fill. Am buying 2 more. Highly recommended!!