Reverse graffiti

[5] Reverse graffiti is a subtractive process, most often 'cleaning' dirt and pollution from public areas to leave behind messages and/or art pieces.

[6] It is estimated that one 55-inch square requires 4-5 gallons of water to create an impression; this is around thirty times less than is needed to produce a paper poster of comparable size.

Power washers are the most common technique used among commissioned artists as they are the fastest and most efficient choice to cover large areas.

[citation needed] Reverse graffiti has been described by promoters as an environmentally friendly form of advertising, since it is temporary, and can sometimes be done with innocuous or biodegradable materials.

[1][11] Leeds council later attempted a 12-month trial program allowing clean advertising in exchange for a percentage of fees.

[14] In Hungary under the name "inverz graffiti" companies and brands like The Coca-Cola Company with "It's Rite" for Sprite, Monster, Deutsche Telekom's local arm Magyar Telekom, Manpower, Ringier publishing house for launching its Népsport blogging platform, TUC advertised with this tool.