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Tag: solvents

Soy and Dry Ice Among San Francisco’s New Tricks to Banish City Graffiti

KQED Science | November 14, 2013 | 1 Comment

Soy and Dry Ice Among San Francisco’s New Tricks to Banish City Graffiti

San Francisco cleans up a lot of graffiti every year. In the past, the city has used standard industrial solvents for this task, but now, workers will be cleaning up with non-toxic materials, in an effort to protect people and reduce toxic runoff.

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