Gaia Water Cartridge - Used Please understand that this item has been stored at home before purchasing. Used cartridges: 4 for tabletop pot, 1 for light bottle. Even after use, they can still be utilized for: * Deodorizing in shoe racks and closets * Deodorizing in refrigerators * Purifying toilet water by placing them in the toilet tank * Taking a bath in high-vibration water and more.