Squirrels often visit bird feeders, eating the seeds and chewing on the feeders. A squirrel-proof bird feeder prevents squirrels from reaching the feeder and causing damage. It usually involves adding a barrier to the bird feeder that squirrels can't pass through. You can also position the bird feeder so as to make it more difficult for squirrels to reach it --- for example, by placing it away from a roof or branch from which they can jump onto the feeder.
Apply all-purpose glue to the bottom of a teacup.
Place the teacup on a tea saucer and press them together to allow the glue to create a tight bond.
Apply all-purpose glue to a half-inch PVC end cap and attach it to the centre of the bottom of the saucer and let it set for several hours.
Use tin snips to cut a circular piece of hardware cloth about 8 inches in diameter. Cut a hole in the centre the same size as the diameter of the PVC pipe.
Slide the hardware cloth into a piece of galvanised stovepipe 24 inches long and 7 inches in diameter. Bend the edges so that it fits snugly in the pipe, about one inch away from the end of the stovepipe.
Make three one-inch cuts at the end of the stovepipe closest to the hardware cloth to form three tabs. Bend these tabs to cover the hardware cloth.
Drive screws through two strips of hanger iron into opposite sides of the PVC pipe, about one foot from one end. Bend free part of the hanger iron strips horizontally to support the squirrel-proof galvanised stovepipe.
Slide the galvanised stovepipe down the PVC pipe so that the galvanised stovepipe goes over the strips of hanger iron on the PVC pipe. The hardware cloth in the galvanised stovepipe meets the strips of hanger iron on the PVC pipe.
Attach the PVC end cap with the teacup and saucer to the end of the PVC tubing near the strips of hanger iron.
Drive the other end of the PVC tubing into the ground and place birdseed in the teacup.
Dangling dried shucked ears of corn from nearby branches can distract squirrels away from bird feeders.