This protective dome has been found to successfully prevent the wily squirrel and other predators from reaching hanging bird feeders. The super-smooth, slippery surface is attached to the feeder pole, making the squirrel slide off and stopping it from getting a grip, before it can reach the feeder. The Squirrel Baffle also gives protective cover from the weather while birds feed, at the same time, keeping the seeds or nuts dry and less likely to deteriorate. For use with any bird feeder poles and feeding kits, our Baffle measures 40cm in width and can accommodate a feeding station pole that measures up to 2.5cm in diameter.