It’s ‘peeback’ time in Shoreditch and Dalston reports the use of paint that urinates back at you. Who first had the idea that Ultra-Ever Dry paint would work like this? Apparently Hamburg beat San Francisco to it.

San Francisco is not the first city to implement urine-repelling paint. The city of Hamburg, Germany has also used the paint and saw a decrease in people who use the streets as a bathroom.

“Based on Hamburg, we know this pilot program is going to work,” Nuru said. “It will reduce the number of people using the walls. I really think it will deter them.”