Produce Preserver Absorbs Ethylene Allowing The Ripening Process Of Many Produce Items To Slow Down. As A Results, Certain Produce Items Will Stay Fresh Longer That Are Kept In Your Crisper Drawer. It Extends Freshness Of Produce Up To 25%. Packet Contains Two Pouches Which Will Be Put In The Housing In Your Crisper Drawer. Packet Also Contains A Status Indicator To Help You Remember To Change The Pouches. Replace Pouches And Status Indicator Every Six Months For Optimal Freshness.