Much more socially acceptable than real graffiti and (more importantly) a lot less illegal - Our Grime Writer will help you to leave your mark wherever you find filth.This special chunky marker pen can be filled with cleaning solution, and used to create art on any canvas of dirt. Use it to tag dirty vehicles & windows, or to transform dirt into artistic expression. Use the Grime writer responsibly to help promote the phenomenon of negative graffiti! Combine the crime of defacing a bridge or bus stop with the community service of cleaning it up again, into one harmless, helpful and creative act.