Council chiefs have told residents who mix in general rubbish with recylcing waste that their bin may not be emptied.
North Lanarkshire Council says “contaminated” material in blue bins and in particular, the food collection service, costs it more than half a million pounds a year.
And it has launched an “education strategy” to persuade people to be more environmentally friendly.
At a recent meeting, the environmental services committee heard a “significant minority” of households - up to one third on some routes - contaminate recycling bins.
Offenders are to have their bins tagged with an amber warning label and if the problem is excessive, the committee heard, their bins will not be emptied – and may be axed altogether.
Kenneth Wilson, head of land services, said sometimes an entire load has to be sent to landfill.
He said food recycling is a “particularly high contaminant” despite the council operating a weekly collection service.
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