Refill cartridges are designed for the Just Add Water System, a safe, economical, ecological, efficient cleaner that only requires water. The portable JAWS cartridge automatically delivers the precise amount of concentrate. All you have to do is fill your work bottle with water, insert the JAWS cartridge, screw the trigger spray back on and clean. Multipurpose Cleaner/Degreaser cleans away ink, grease, gunk and grime on appliance interiors and exteriors, floors (including sealed wood floors), laminates, range hoods, solid surface countertops, hard-surface outdoor furniture and more. Small cartridges in a compact box dramatically reduce space.