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Graffiti Got You Down? Here’s how to remove it

A common frustration for every cleaning professional is tackling indoor graffiti problems. The graffiti found in restrooms and other areas often includes foul language, personally degrading messages, racist messages and other unsightly and unsavory messaging that needs to be removed quickly.

The Problem: Those that vandalize surfaces indoors with Graffiti are usually armed with a permanent marker or ink pen. The traditional solution to removing this type of graffiti has been an aerosol that sprays a toxic solvent mixture with a pungent odor. Typical solvents can include Toluene, Methylene Chloride, Perchloroethylene, Methyl-Ethyl Ketone, and 2-Butoxyethanol. While these solvents can be effective, the harmful vapors emitted are a health and safety problem, particularly in schools.

A Safer Solution: A better solution to removing interior graffiti is using a non-aerosol, low odor product with a low toxicity solvent system to quickly remove the graffiti. It is simply sprayed on and wiped off. It removes permanent marker and ink quickly, and it won’t harm most surfaces. It can also effective on marks caused by hockey pucks, soft balls and others items known to leave difficult to remove marks on surfaces. This type of system is not designed for paint based graffiti usually found outdoors. The job can be made even easier by using a foam eraser pad.   Of course, always test surfaces before using.

Typical Surfaces where graffiti can be found:

Removing Permanent Marker

Removing Permanent Marker

  • Lockers
  • Walls and Tabletops
  • Restroom Walls and Partitions
  • Ceramic, Porcelain or other tile
  • Mirrors and Windows


Multi-Clean sells KNOCK-OFF, an interior graffiti remover that is low odor, non-aerosol, safer and less toxic than most other products. For more information, follow this link for details on KNOCK OFF.


Multi-Clean products are sold through authorized distributors.   We offer products to help customers to clean better, faster and safer.

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  1. Jordan Reply

    Great guide to removing graffiti. I definitely know quite a few businesses who should see this article! It can be a hassle, but it’s definitely worth it for a cleaner wall.

  2. Scarlet Aaron Reply

    Thank you for this very interesting information. Graffiti has long been considered an act of vandalism that signifies urban decay and a detriment to property values in an area. Therefore, most governments have seen graffiti as detrimental, and have outlawed the practice.

  3. Tom Spry Reply

    Well worth a read. Got great insights and information from your blog. Thanks.

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