MILDURA Landfill is asking the community to check what they place in their bins following a 2022 audit of kerbside collection services revealed a 9.4 per cent contamination rate for green bins and 11.5 per cent for yellow bins.

The audit found the top five sources of contamination across yellow and green bins were textiles, food, bagged recyclables, bagged waste and electronics waste.

The contamination rates were slightly higher than last year's rate of 10 per cent but are still a significant improvement on 2020's 28 per cent contamination rate.

The audit also revealed more than 67.5 per cent of waste in the red rubbish bins should've gone into either the green or yellow bins with majority of the incorrectly disposed waste being food scraps. In 2021 this rate was 57 per cent.

The report found if waste had been disposed of into the correct bins this would have freed up well over half the bin space, and ensured less waste was going to landfill.

Mildura Landfill waste management coordinator Sarah O'Connor said contaminated goods were much harder to recycle.

"The bins are collected and our recycling goes down to Melbourne to be sorted and if there is a contamination of the recycling, it makes the products less viable," she said.

"It does come back to Mildura Landfill beforehand and we take out key contaminants we see, but unfortunately some people just use their recycling bins as a rubbish bin."

Ms O'Connor said it was important people were educated on how best to dispose of their waste and if they had any questions they could contact Mildura Landfill or council.

"People can also come and bring things here to be recycled on top of what goes in your kerbside bin, such as scrap metal, polystyrene and extra recycling from something like a party," she said.

"We also have plenty of resources and an education officer so we are more than happy to go to any work places and schools and teach them about recycling as well as the use of the organics bin."