Home renovations and construction works across the city have led to a rise in rat infestations, pest control services have warned.
It comes as Dublin City Council revealed it has seen an increase in rodent problems this year.
Residents in Clondalkin, Ballyfermot and Phibsboro are also experiencing similar issues.
Also, the National Transport Authority (NTA) has said it offers a free pest control service to anyone in areas affected by ongoing Luas works.
Professional rat catchers say illegal dumping isn't solely to blame.
Ian Mullally of Pest Professionals says he has seen a definite increase in rat problems.
"We would normally have less in the summer months, but we have noticed an increase," he told the Herald.
"We've visited barber shops and carpet shops this year, and that's not normal," he added. "Rats would normally go somewhere because there's a food source there."
Meanwhile, Johnny Vaughan of LG Vaughan & Sons said increased rainfall could also force pests out of the drains.
"There are always rats when there is rain but certain times you would get more of them, especially if there's a lot of building going on," he added.
While Mr Vaughan noted building work such as the Luas Cross City works were having an impact, he added that an increase in home extensions have also driven up infestations.
"People are getting renovation work done - that's been up in the last two years," he said.
"People don't think about the drainage when they get their houses renovated, and that's how pests can get in."
Three Dublin communities have faced problems with rats this year.
A woman in Phibsboro reported that she had caught 12 rats in her back garden this week.
Separately, the HSE told residents in Ballyfermot that it could take up to four weeks to deal with infestations due to staff shortages.
Dublin City Council said rat sightings in the city had increased in the past year, and believes that illegal dumping is contributing to that.