Solvents are very versatile, and can be produced or blended to meet very specific requirements, and to make products with optimal performance, including spray paints that dry quickly and don't clog the spray nozzle; inks that don't smudge; outdoor paints that look good and last a long time; and, strong cleaners that are good for tough jobs. Even so- called "water-based" products often depend on organic solvents to get the job done. Water-based architectural coatings, for example, rely on organic solvents in order to dry evenly and with a pleasing appearance and finish.