Bluapple® is designed to effectively absorb ethylene gas from fruits and vegetables. Bluapple® comes ready to use! Just place Bluapple® inside the refrigerator crisper or wherever you store produce. There is a packet of active ingredient inside the BPA free Bluapple® shell that will absorb ethylene gas for up to three months. The Bluapple® is refillable! By reusing the Bluapple and using the refill packets, less waste is produced, money is saved, and fresher, longer lasting produce is enjoyed!