This unique bird feeder is constructed entirely without wood or plastic. As a result, it will last for years, with no damage from squirrels and no cleaning required. The "No/No" feeder holds over 2.5 lbs. of black oil sunflower seeds, the most popular seed for wild birds, and it will feed 10-15 birds at once. Its wire mesh design helps to protect wild birds from avian diseases. No assembly required.