1AUTOMATIC REFILL: The Automatic cat feeder utilizes gravity feeding technology to dispense dry food as your pet empties the bowl, thereby extending the time between refills. 2LARGE CAPACITY: Automatic pet watering system, gravity feed design, small pets can last about 7 days, large pets can last up to 3 days, you can go on vacation, work, party without worrying about your pets being hungry. 3FOOD GRADE PLASTIC: Cat feeder and water dispenser set is made of food grade plastic material, thick, durable and recyclable, please feel free to use it. 4EASY TO ADD FOOD: The feeder has an open lid at the top of the food storage bucket to add food, suitable for a wide range of pet food, no problem to put all freeze dried. 5EASY TO CLEAN: Bucket body and sump are detachable, can be rinsed with water directly, weekly clean is recommended.