A London borough is introducing anti-urine coated walls that will see urine 'bounce back' on to the offender if they pee where they shouldn't.
Hackney Council - which spends £100,000 a year washing urine off of walls and pavements - said the coating will allow urine to bounce off the walls and on to the person's shoes and trousers.
The 'peeback' walls will also stop urine from soaking into the surface to prevent stains and smells.
Cllr Feryal Demirci, the council's cabinet member for neighbourhoods and environment, said: 'No-one wants someone weeing on their own doorstep, yet some people continue to do it on the doorsteps of our residents and businesses.
'If the prospect of a fine doesn't put them off from weeing in the street, maybe the risk of getting covered in urine will.'
The walls, as well as a poster campaign promoting safety over the festive period, will be trialled in Shoreditch and Dalston.