Pure Crystal Drink Bowl Soft Water Cartridge for Cats 3 boxes (2 cartridges per box) - New, unopened + 1 unused item from an opened box Total: 7 cartridges (7 months' worth) Each box contains 2 cartridges. Only one box has been opened, and one cartridge has been used, leaving only one. Although new and unused, please refrain from purchasing if you are sensitive to items stored at home.