Police in Bath will be distributing "scratch and sniff" cards to the public to educate and inform them about the signs to spot and detect cannabis farms.
The campaign has been launched by Crimestoppers to tackle cannabis cultivation and Avon and Somerset Police has been highlighted as one of five hotspots in the UK.
Across the country there has been a 15 per cent increase in cannabis factories in 2011/12.
The Association of Chief Police Officers lead for drugs Andy Bliss said the idea was that the cards would help ordinary people recognise the smell of cannabis.
He said: "Closing down cannabis farms and arresting the criminals who run and organise them is a key focus in drugs policing.
"This is because we recognise that these farms are often run by organised criminals but also because they bring crime and anti-social behaviour into local communities causing real harm and leaving people feeling unsafe.
"We also know that many people don't realise that the empty, run down house or flat on their street with people coming and going late at night may actually be a commercial cannabis farm. It's not just the stereotype of the remote rural set or disused industrial estate unit.
"The Crimestoppers campaign will help members of the public to recognise the signs and smell of a cannabis farm. The police will use the intelligence generated by the campaign to help build on recent successes in tackling this issue."
Anyone with information about a cannabis farm in their area can report it anonymously by contacting Crimestoppers on 0800 555111. They can also fill in an anonymous online form at www.crimestoppers-uk.org.
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