The Perky-Pet Squirrel-Be-Gone Wild Bird Feeder III features 9 feeding ports, U-shaped perches, 3 separate seed tubes that allow for a variety of seed types and holds 8 lb of seed. The interior seed tower is surrounded by rustic metalwork. The feeding ports have sturdy metal perches that allow birds to feed comfortably-but, when the squirrels perch on them, their weight causes the entire metal casing to slip down, completely blocking the feeding ports and their access to the seed. The nine perch/feeding station set-up, coupled with the anti-squirrel technology makes this feeder one of the most economical and convenient on the market! The three clear, seed tubes make it easy to monitor seed levels. * Remember to clean your feeder once every two weeks with mild soap and water solution.