People would "think twice" about buying illegal cigarettes if they knew what they contained, local authority leaders said.
Black market cigarettes seized in raids across England were found to contain human excrement, the Local Government Authority revealed today.
The LGA said the illicit trade was "costing taxpayer billions", and affecting council efforts to cut smoking.
Counterfeit tobacco being sold cheaply through the black market by rogue traders is hampering council efforts to reduce smoking.
This illicit trade is also funding organised criminal gangs, damaging the livelihoods of honest businesses and costing taxpayers billions of pounds a year.
People buying cheap cigarettes might think they are getting a great deal - but the truth is that they're not. If they knew what they might contain, they might think twice about buying them.
Council prosecutions should serve as a strong warning to any shopkeeper thinking of stocking their shelves with illegal tobacco and not thinking twice about selling them cheaply to children and others.
More top news
Dealing with migrants has become "part of the day job" for truck drivers, a haulage firm has told ITV News.
The Hearing Clinic has been hit with a £220,000 fine for bombarding people with millions of nuisance calls.
British Athletes are unlikely to achieve the same Olympic medal tally at Rio as they did at London in 2012, the head of UK Sport has said.