Police say they need people's help if they are going to continue making progress in their crackdown on methamphetamine, or P.
They say they're exposing more and more clandestine labs - 115 this year - but believe that many more are going undetected.
Assistant commissioner Grant Nicholls says P labs can be found anywhere - in flats, homes, motel rooms and even car boots.
Mr Nicholls says there are certain signs that a lab might be in operation. They include bitter, insolvent or ammonia smells, and unusual activity such as blacked-out windows, lots of people coming and going, and chemical containers in the rubbish.
He says anyone who suspects they have found or live near a P lab should contact police immediately.
