Radio NZ- Kathryn Ryan speaks to John Gray of the Home Owners and Buyers Association, who says the system for dealing with meth contaminated houses is too ad hoc and guidelines are needed. John say’s “there needs to be a careful forensic analysis of a building, it’s almost like a crime scene, you have to make sure there is careful sampling and protection of those sampling….. there is some very shabby work being done”.

Listen to the full story on RadioNZ here