35 house parties consisting 30 people in the Castletroy area of Limerick have been shut down by Gardai, since last Sunday.
As the students return to the college, they strengthened the patrols around the University of Limerick neighborhoods.
Gardaí have made five arrests for public order offences and trespassing offences, and issued 30 warnings about anti-social behaviour.
Academic personnel at UL have been accompanying gardaí on their nightly patrols to make the students aware of the public health guidelines.
They have warned them not to gather in large group or to organise house parties.
In the absence of penal provisions Superintendent Brian Sugrue from Henry Street in Limerick, who is heading up the operation, said gardaí are limited in what they can do about house parties.
Addressing councilors and TDs at the JPC, he said anybody with concerns about house parties or other anti-social behaviour should contact gardaí.