One thing that works about half the time is attaching reflective tape (such as Irri-Tape™, Bird Blinder™, Brite Way™ and others) near the area where woodpeckers have caused damage:  You can try hanging aluminum pie plates, old CDs or other shiny items, but reflective tape works better. Use strips 3 or 4 feet (0.91 or 1.2 m) long, attached so that one end dangle and move in the wind. If the birds are pecking on your siding, attach several strips a few feet apart. Keep in mind that the tape deteriorates over time, and only works when there's wind to move it. Hang a flag or decoration near the area for a more visually appealing solution. A windsock or windmill that moves quickly when the wind blows may work to scare woodpeckers away. Sound-based deterrents such as ultrasonic recordings of a woodpecker in distress or with predator sounds, have been tested and proven to have no effect at all, at least on Pileated woodpeckers.   Place several wind chimes on and around your house. The noise from these chimes may possibly discourage woodpecker visitors. If a Hairy woodpecker, Lewis’ woodpecker, Red-bellied Woodpecker or Northern Flicker is trying to nest in your home, attaching a nesting box where they are pecking (or very close by) will give them a better home. Be sure to pack it full of wood chips in February or March so they can fulfill their instinctive drive to excavate. These woodpeckers are the only ones know to use man-made nest boxes for nesting.
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