Fog cannons, DNA spray - they sound like something out of a James Bond movie.
But the security measures, along with panic alarms and time safes for cash and cigarettes, were among options announced by Police Minister Paula Bennett yesterday as part of a $1.8 million initiative to curb the alarming spate of violent robberies plaguing dairies around the country.
Fog cannons fill rooms with a dense fog made of glycol and water forced through a heated element at the pressing of an emergency button.
It's said to be harmless to humans, animals, fixtures and IT equipment, but what's it like to experience?
Newstalk ZB journalist Andrew McMartin knows: he took part in a fog cannon demonstration last year.