If you really want to make your bird feeder with a squirrel-proof, you must destroy any access road that they own. This means two things: make the pole mounting is not possible for them to climb, and the placement of a series of jump connections.
When the position of the connection, you may need for feeder as much as 80-10 feet from objects like they could be used as a launching pad. This includes bus and curls, of course, but other things like picnic tables, birdbaths, etc. They also realized that if the branches above the feeder, the squirrels can not drop down from the heights that it seems crazy to land on the feeder.
For beams, the best is a baffle of some type to be used. All the baffles must be "rough", so if they have a handle on one side one way or another, it fell, and the squirrel dropped rather than continuing to rise. Avoid plastic baffle, and the use of children's metal. Plastics that can be chewed ... squirrels have amazing teeth. And even if they do not chew through the screen, do not shed enough to have a better grip for climbing. The best type of baffle is more like a can as the cup. Squirrels went in, found the road blocked, and another. If they try to go on the outside of the can, they turn and they slide.
You've tried everything! Each claim to be squirrel-proof, but you have a picture to prove it just does not work. Does a squirrel-proof connection really exist? How much does it cost? These are normal questions we receive a customer's decision to make to buy a bird feeder.