Suet Sandwich Woodpecker Feeder
If you love listening to and watching woodpeckers, then the Suet Sandwich is the perfect solution to keep your winged friends well fed and the squirrels out. The feeder works by encasing two slices of suet beef fat between two pieces of fake bark. Because the woodpecker is long-tongued, they're able to access the tasty treat, but the squirrels are kept out. It retails for around $35.
Droll Yankees Squirrel-Proof Feeders
The Droll Yankees line of bird feeders first came out in 2000. Basically, the perch is motorized and starts to spin when a squirrel sits on it. The idea is that the squirrel will go flying. The battery requires recharging every eight to twelve weeks. For the past two years, the company's line of squirrel-tipping feeders has been extended to also include models with weight-activated, collapsible perches or trays. These models start at $79 and go up to $119.
Buy a Squirrel Feeder
If you can't beat them, feed them. To keep squirrels off your feeder, try a block of birdseed placed on the ground. These all-in-one feasters come in a hefty size and hold several pounds of seeds and nuts in one compressed block. The squirrels will nibble away and (hopefully) leave your bird feeder alone.