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 & clean. Multipurpose Cleaner / Degreaser cleans away ink, grease, gunk & grime on appliance interiors & exteriors, floors (including sealed wood floors), laminates, range hoods, solid surface countertops, hard-surface outdoor furniture & more. Small cartridges in a compact box dramatically reduce space.