After years of the same problem, we actually bought a squirrel-proof birdfeeder. It wasn’t cheap but it DOES work. The weight of the squirrel closes off the food. I promise you that it works—we looked for years and finally see the squirrels giving up. http://www.amazon.com/Brome-1024-Squirrel-Buster-Cardinal/dp/B0007LQ3RQ/ref=sr_1_1?ie=UTF8&qid=1394387519&sr=8-1&keywords=squirrel+proof+bird+feeder
After years of the same problem, we actually bought a squirrel-proof birdfeeder. It wasn’t cheap but it DOES work. The weight of the squirrel closes off the food. I promise you that it works—we looked for years and finally see the squirrels giving up. http://www.amazon.com/Brome-1024-Squirrel-Buster-Cardinal/dp/B0007LQ3RQ/ref=sr_1_1?ie=UTF8&qid=1394387519&sr=8-1&keywords=squirrel+proof+bird+feeder