Cleaning gel is designed to clean car air vents, steering wheels, console panel, storage bins, cup holder, door handles, dashboards and other hard-to-reach spaces. Push car cleaning gel into any little cracks, press car vent cleaner on and the dust would be carried away. You can also press the keyboard cleaner slightly on the keyboard surface and then pull out slowly, the dust would be carried away with the cleaning gel. (Note: don't press the cleaning gel too hard, especially on mechanical keyboard). This car cleaning gel can be used for multiple times until the gel turns to black. Please put the gel into the sealed box after use and store it in a cool dry place. DO NOT use car vent cleaner to wipe the cellphone screen or computer monitor. (NOTE: don't wash the cleaning gel with water.)