Move the bird feeder away from outdoor structures and trees. These are the most common access points for raccoons to get to your bird food.
Erect the bird feeder on a metal or plastic pole, or suspend it on a thin cable between two trees or outdoor structures, recommends the Purdue University Extension. Raccoons will have a hard time scaling either type. For best results, the feeder should be approximately 5 feet off the ground.
Add a plastic baffle to bird feeders that sit atop poles. These cone-shaped plastic devices, placed approximately 4 feet high, keep even the most determined raccoon from scaling the pole. If you're suspending the feeder on a string or cable, cut 4 feet of PVC pipe into 6-inch-long pieces and string four of these sections on each side of the hanging bird feeder.
Bring in the bird feeder every night and sweep up any food that's fallen to the ground. Raccoons are most active starting around dusk. By putting away the feeders, you disrupt their feeding system and cause them to search for more consistent sources of food, thus taking your feeders off their "radar."
Smear lithium grease onto your bird feeder's post, recommends the West Virginia Division of Natural Resources. Not only does this make the post extra-slippery and hard to climb, raccoons prize cleanliness and dislike getting oils on their fur and paws.
Trap the raccoons as a last resort if they still hang around your backyard and create problems with your feeders. Raccoons are easy to trap. Use a 15-by-15-inch by 36-inch wire trap and place an open can of fish-flavored cat food or tuna inside.