Stop squirrels stealing your bird food. The Squirrel Buster lets birds feed freely while denying squirrels. Safe and humane, it's truly effective at denying squirrels a free meal. When a squirrel climbs onto the feeder, its weight automatically shuts off the feeder ports, preventing access to seed. The patented Seed Tube Ventilation System lets fresh air enter. Hot, humid air escapes at the top, keeping seed cool, fresh and appealing to birds. There's a generous choice of perching and clinging options, making The Squirrel Buster popular with a wide range of different garden bird species. The feeder's tough new chew-proof design also shrugs off the worst of the weather. This would be perfect for any size garden.