Absorbs ethylene gas from fruits and vegetables, the natural gas that causes produce to ripen quicker. Minimizes spoiled produce, cutting back on replacement purchases. Enjoy fresh tasting fruits and vegetables with a longer storage life. Saves you time on monthly replacements and keeps your produce fresher longer. Refill every 6 months. Includes 2 refillable produce savers. To refill, squeeze base and open top of holder, place 1 refill packet per holder inside. For refills purchase, PK-1™. PureFresh Refillable Fruit and Veggie Saver™ is a universal filter that can be placed in any refrigerator crisper drawer or storage bin.