All feeders are made with strong metal constructions which resist damage and protect your bird food. Love them or hate them, squirrels can often cleverly find their way to your bird food supply. Plastic feeders can quickly be destroyed by a determined squirrel but here you'll see a wide range of squirrel resistant feeders, which employ strong metal construction that resist squirrel damage. The three Squirrel Buster products below are guaranteed squirrel proof, with specially designed mechanisms that prevent squirrels (and large birds if on the correct settings) devouring all the food before your garden birds get a chance to feed. The Squirrel Buster feeders also come with a 2 year warranty. The difference between squirrel resistant and squirrel proof is: Squirrel resistant feeders have been designed to withstand squirrels' attempts at destroying them and eating the contents. Some smaller squirrels may be able to squeeze through the bars and get to the food. However, they are all made with strong metal construction which resist squirrel damage. Squirrel proof feeders have been designed to keep squirrels from eating the bird food.