I bought one of these feeders for myself about 5 years ago, and it is the best squirrel-proof feeder that I have found. Exceptionally talented squirrels can jump horizontally into the narrow space between the roof and tray, but only if it is quite close to a tree or wall. Most squirrels crash a few times and then make due cleaning up what the birds dump on the ground. They can't access it by coming down the chain from above. The feeder also holds so much seed (about 6-7 lbs.) that you don't need to refill it often. I love this feeder and recently purchased a second one as a gift. You'll make up the cost in saved seed within a few months.
Rating: [5 of 5 Stars!]