Walls That ‘Pee Back’ Deter Public Urination in S.F.

San Francisco’s newly-painted pee-repelling walls appear to be delivering on their promise to stop public urination.

“It always smells like urine out here, but it doesn’t seem as bad as it was last week,” a BART passenger was overheard telling a friend as they exited the 24th Street station, according to the San Francisco Chronicle.

The city’s Public Works department completed painting nine of the city’s most urine-prone walls with Ultra-Ever Dry paint last week. The paint has a series of geometric shapes and patterns along with a chemical base that creates peaks which repel most water and oil-based liquids, causing the urine to spray back onto the shoes and pants of the guilty party.

San Francisco Public Works spokeswoman Rachel Gordon also noted that since the urine-prone walls were coated with the specially-formulated pee-repellant paint, they’ve noticed a great reduction in the smell of urine.

“We’ve had dozens of calls from other property owners and city agencies who want to put the coating on their properties,” Gordon said.

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