The St Pauli quarter of Hamburg has long been known as one of Europe's biggest party destinations.

Filled with bars, nightclubs, sex shops and prostitutes; its main street, the Reeperbahn, has long been a byword for seediness.

But residents have become tired of anti-social behaviour in the area, in particular public urination.

To combat this menace, water resistant paint has been applied to a number of hot-spots as part of the 'St Pauli pinkelt zuruck' (St Pauli pisses back) campaign.

The paint bounces the stream right back at the offender, providing a good incentive to use a toilet instead.

One community figure Julia Staron, described St Pauli's problem to Der Spiegel:

"If you go here on the road, it feels like being in a sewer." 

She says residents welcome tourists, but ask that they respect the area and don't engage in anti-social behaviour:

"The solution must be to explain our rules to the visitors: Don't photograph prostitute at work! Don't puke in mailboxes! And don't piss on walls! The paint campaign is only the beginning."

In a few weeks Staron plans to introduce the 'Pinkel-Karte,' a card which is stamped each time someone uses a bar's toilet. The sixth stamp gets them a shot free of charge.

Hat-tip to theJournal.