The Squirrel Buster Mini is guaranteed to be squirrel proof Squirrel proof Holds 3/4 quarts of seed Easy to fill Compact size Chew proof. The patented Squirrel Buster technology is truly squirrel proof. Thousands of delighted bird lovers have confirmed it. Openings in the wire shroud align with seed ports and provide birds access to the seed. When a squirrel climbs onto the feeder, its weight automatically forces the shroud down, closing access to the seed ports. All squirrels and many large birds are foiled, but not harmed in any way. Freedom to locate your feeder Now that you no longer have to worry about squirrels, you are now free to locate your feeder just about anywhere. Position your feeder over your favorite window, by your deck or in a nearby tree, for those great close-up views. Use wall brackets, branch and extension hooks to help you hang your feeder.