Don't let good produce go bad before its time. Three things cause produce to rot and spoil quickly: ethylene gas, improper airflow and uncontrolled humidity. The GreenSaver system has the solution. Produce Keepers feature enhanced carbon filters that trap and absorb ethylene gas, plus removable baskets that promote proper airflow and vents for maintaining optimum humidity for different types of produce. Each Produce Keeper container features an all-natural, non-toxic activated carbon filter made from coconut husks. Baskets can also be used as colanders for rinsing.