Police believe methamphetamine has become a $19.4 million problem in this country.
New figures show Kiwis are getting through 17.5kg of it each week.
And cocaine usage is also on the rise \u2014 with 3kg of it consumed each week.
Drug Detection Agency chief executive Glenn Dobson joined Mike Hosking.
LISTEN ABOVE
See omnystudio.com/listener for privacy information.