Water splashing against the anti-pee wall
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Testing San Francisco's anti-pee wall

San Francisco's Department of Public Works (DPW) is trailing a unique idea - coating walls in the city with anti-pee paint.

The idea is that when someone urinates against the coated wall, it will splash back at them.

Mohammed Nuru, from the DPW, demonstrated to the BBC how it worked.

Video journalist: Dave Lee

  • 04 Aug 2015
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