"Scratch'n'Sniff" Cannabis Cards Issued
26 June 2014, 17:09 | Updated: 26 June 2014, 17:21
Dyfed Powys Police has a new tactic in the fight against drugs.
'Scratch and sniff' cards are being given out to help people recognise the smell of cannabis as detectives try to stop the gangs who grow it.
Heart is being told they're becoming more and more common on our streets.
Mansell Jones is from Crimestoppers. He said: "In the past, they've been not confined to but more than likely were found on factory sites, isolated sites but there is a tendency, more recently, for them to be found in houses or flats in residential areas."
He said there are tell tale signs for people to look out for.
"They might see signs of cannabis growing equipment being moved, constantly covered or blocked off windows of properties, visitors at unsociable hours, strong and constant lighting day and night and high levels of heat.
"The same gangs are very often involved in modern day slavery, human trafficking, firearms so we're asking the public to help us to keep serious, organised crime away from their communities."
Anyone with information about cannabis factories can contact Crimestoppers anonymously on 0800 555 111.