Residents and businesses on 90 streets in the south city centre will no longer be able to use plastic bin bags for rubbish collection.
The ban will affect a number of properties around Grafton Street and Temple Bar.
City centre premises that did not have enough space for wheelie bins were previously allowed to leave outplastic bin bags for collection.
From today residents and businesses will face fines of €150 if they continue to put rubbish in plastic sacks.
Since announcing the ban in September, only 30% of properties have switched to bin collection alternatives, such as wheelie bins or larger refuse bins.
Since 2016, more than a thousand streets, that didn't have space for wheelie bins, have been allowed to leave out plastic bags.
It's part of efforts to keep the city cleaner and stop seagulls and other animals from ripping open the sacks.
