I have had growing problems with squirrels climbing the pole to my bird feeder and eating all the birdseed. I wanted to find a low maintenance and easy to install, permanent solution. The traditional baffles that look like a half circle don't always work, and lubing up the pole with Vaseline doesn't really seem too kind to the squirrel. After watching three of the little varmints climbing the pole hand over hand I remembered the "Flexi-Perch squirrel proof bird feeder" by billr that I had seen quite some time ago on instructables.
Step 1: Analyze The Situation
This bird feeder is pole mounted, which makes it easy for the squirrel to climb the pole hand over hand.