Flyposting costs Belfast a quarter of a million pounds
Fly posting is costing Belfast a quarter of a million pounds a year, according to the city centre manager.
Putting up posters to advertise an event is illegal, but some nightclubs and entertainment venues continue to paste bills around the city.
The new copper masts in Donegall Place have already been targeted.
City centre manager Andrew Irvine said those responsible are wasting rate-payers money and destroying the appearance of Belfast.
He has accused the Department of the Environment of failing to tackle the problem - despite demands from local councillors and said the planning service must start enforcing the law.
In a statement the DoE said it had "sought to tackle the problem of fly-posting with the introduction of the Clean Neighbourhoods and Environment Act (Northern Ireland) 2011".
"The act strengthens the powers available to district councils to deal with fly-posting and a number of other local environmental quality problems," the statement said.
"Through the act the department has responded positively to calls made by district councils over the past few years to give them a robust set of powers to tackle such problems effectively.
"It is the department's intention to bring the act into operation in April 2012 once the necessary subordinate legislation and supporting guidance has been put in place."