![138303009 St. Pauli neighborhood in Hamburg, Germany.](https://api.time.com/wp-content/uploads/2015/03/st-pauli-hamburg.jpg?quality=85&w=2400)
Public urinators in the St. Pauli neighborhood of Hamburg are in for a rude awakening: a community group has applied a special water-repellant paint to the walls of certain buildings that sprays liquid back in the direction it came from.
The nightclub/red-light district has been plagued by night time revelers relieving themselves on walls, and residents decided that this solution would not only protect their buildings but also send the message loud and clear that this behavior was unacceptable. To give potential offenders a fair warning, Reuters reports the group has put up signs that read “Do not pee here! We pee back!”
The paint, which has previously been used on ships, is expensive — a 6 square meter area costs 500 euros to paint — but the organizer of the group behind the initiative says the community is saving money on cleaning.
[Reuters]
Read next: There Is Now an App for Prostitution
More Must-Reads from TIME
- Why Biden Dropped Out
- Ukraine’s Plan to Survive Trump
- The Rise of a New Kind of Parenting Guru
- The Chaos and Commotion of the RNC in Photos
- Why We All Have a Stake in Twisters’ Success
- 8 Eating Habits That Actually Improve Your Sleep
- Welcome to the Noah Lyles Olympics
- Get Our Paris Olympics Newsletter in Your Inbox
Contact us at letters@time.com