The best feeders should be easy to clean, easy to fill, and versatile. This feeder does all that and more The SureFill Thistle Bird Feeder is a tube-style feeder with four feeding ports, designed specifically to dispense thistle (nyjer) seed. It also features a spring-loaded flip top that enables the feeder to be opened and closed with the push of a button so you can leave the feeder hanging for easy filling. 1. 5 pound seed capacity4 feeding ports designed specifically for thistle/nyjer seedRemovable base for easy cleaningPrevents wasted seed while fillingEasy to open, just press the button INSTRUCTIONS: Please For the sake of the birds, keep your feeder clean Dirty feeders spread disease. We recommend disinfecting your bird feeders once a month in winter and more often in hot and humid weather. Soak all parts in a 50/50 solution of white vinegar and water. Use a bird feeder brush to brush away grime inside the tube. Then remove any hardware and clean with a solution of mild soap and water, rinsing thoroughly. Refill when completely dry.