Fruits & Vegetables naturally give off ethylene gas as they ripen. As they absorb the gas, it makes them over-ripen more quickly. ProducePreserver absorbs the ethylene instead, so your produce stays fresher up to 4 days longer! These fruits and vegetables produce high amounts of ethylene and should be stored away from other items Apples, Nectarinines, Apricots, Papayas, Avocados, Passion Fruit, Cantaloupe, Peaches, Cherimoyas, and Pears. These fruits and vegetables are sensitive to ethylene and should be kept away from ethylene-producing foods Unripe Bananas, Leeks, Green Beans, Lettuce, Broccoli, Mango, Brussels Sprouts, Parsley, Cabbage, Peas, Cauliflower, Spinach, Chard, Watermelon and Cucumbers.