Any overly refreshed visitors to Hamburg should think twice next time they fancy relieving themselves up against a wall . That 's because residents of the pub-heavy area at the heart of the party town are fighting back against so-called 'Wildpinkler ' , which literally means 'free pee-ers ' in German . Members of the St Pauli Interest Community ( IG St Pauli ) fed up with drinkers weeing everywhere from back alleys to underpasses to childrens ' playgrounds are using a special paint to give them a nasty surprise . Scroll down for video . A neon animation shows how easy it was to pee without payback before ( left ) compared to after ( right ) the application of hydrophobic paint to walls in St Pauli . This local resident registered his displeasure with the situation in the St Pauli Interest Community video . Liquid poured on one half of a breeze block coated with water-repellent paint runs off in this demonstration . St Pauli Interest Community members have put up warning signs - put not every painted wall has them . Water droplets bounce right off the hydrophobic paint with which the residents have coated dozens of walls across a district which welcomes 20 million often heavy-drinking party guests every year . Now public urinators can expect some splash back on their shoes and clothes should they decide to empty their bladders in the street . IG St Pauli board member and owner of several local bars Uwe Christiansen told The Local : 'It was a real annoyance that was growing and growing ' 'We wanted to bring people to reason . ' A man relieving himself in the street jumps back in horror when he gets splash back from the special paint . So-called 'Wildpinkler ' , or 'free pee-ers ' , have even been caught urinating in playgrounds in St Pauli . In a short video produced by the group , members can be seen putting up signs reading 'DO NOT PEE HERE ! We pee back ' on specially-treated walls . Those falling foul of the clever ruse can be seen jumping back in horror as they get more than they bargained for when they unzipped their trousers . As Julia Staron of IG St Pauli says at the end of the video : 'Watch out ! From now on , it 's Peeback time ' . Christiansen added : 'People were just tired of the peeing on walls , home entrances and playgrounds . ' And visitors should take extra care as not every wall which has been treated has a warning sign . St Pauli 's red light district . The area of Hamburg gets 20 million often heavy-drinking visitors every year .
Party area St Pauli is plagued by 'Wildpinkler ' , which means 'free pee-ers ' District welcomes 20 million often heavy-drinking party guests every year . Local residents ' group is fighting back with special hydrophobic paint . Water droplets bounce right off , causing splash back for public urinators . Comment: We pee back ' on specially-treated walls .