This feeder was a bit of a slow starter but now I am refilling it weekly in cold winter weather.  In contrast, my sunflower seed feeders seem to command refills 2 or 3 times a week.  The suet feeder is indeed a favorite of the woodpeckers and has a fan club of the cardinals, with an occasional valiant squirrel effort.  Its lid is attached and very easy to operate and I love the doubled surface area of the suet.