People say they have received fines from waste companies for as little as having a teabag or a couple of biscuits in their recycling bin.
Greyhound have issued €30 fines to customers in Dublin, and warned their bins will be removed if contamination continues. Last week Panda announced plans to introduce a €25 fine for its customers.
Concerns have been raised that bins are easily contaminated when they're left out on the road for collection. One woman in Ballyfermot is facing a fine after her collection company found four Toffypops in her green bins.
Nicola McHugh from Ballyfermot says she received a fine, but she insists she should not have to pay as "kids are using the bins constantly" when they're outside.
"My bins are kept in the front garden... I just don't see why I should have to pay this fine. I mean, anyone can put anything in anyone's bins when they're outside".
People Before Profit, meanwhile, say it's an example of waste companies acting like cartels, with TD Bríd Smith suggesting that they're robbing people blind.
She insists that waste companies must give some leeway "for a certain level of contamination" to allow for human error or people incorrectly putting waste in another person's bins.
Greyhound this afternoon insisted that "nobody is presented with a surcharge for having a single teabag in their green bin".
"Only bins that are consistently heavy over a long period are selected for monitoring," they said in a statement.
The company said green bin contamination is "now at crisis levels", with a significant amount of recycle bin waste contaminated by "faeces covered nappies, rotten food and garden waste".
They shared a photo of the sort of green bin content they encounter: