"...U.S. Postal Service spokeswoman in Indianapolis, Kim Yates, said one postal employee is assigned to handle mailboxes damaged by graffiti. He uses a cleaner to remove the graffiti paint. If this doesn't work he paints the box on site or swaps it for another one. Yates said the Postal Service in Indianapolis averages graffiti removal on five boxes a week. Report such graffiti to your local post office..."
Reference: indystar.com
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