Police in Wrexham say their crackdown on drinkers urinating in the street is working.
Police say there has been a 'drastic drop' in numbers caught since they started
Night-time revellers are being asked to mop up - or face a fine.
Police say the deterrent factor seems to be working, with fewer people now being caught after its first month of operation.
The weekend patrol, complete with a water bowser, brush and bucket, starts catching offenders as early as pub closing time.
Pc Paul Gough said: "When we first started off, the numbers we were catching were in the high 20s, but in the few weekends we have been running it, this has gone down."
A water bowser travels with the police patrol in Wrexham
"That's good news for us and for the people of Wrexham."
The vast majority of those caught over the last four weekends have opted to wash up rather than be arrested.
Police say the response of the public to the crackdown on drunken behaviour has been good - even amongst those who have been caught.
Over the first three weekends, 52 people were caught and only three refused to clean up.
North Wales chief constable Richard Brunstrom has already said the general public has supported the initiative.
He said: "We're literally getting clapped in the street because at last someone is doing something about it."