In September 2007, the Social Tonics Association of New Zealand (STANZ) called for Dean to step down from speaking on drug issues after she demonstrated "a lack of credibility in calling for the ban of dihydrogen monoxide (water)". STANZ Chairman Matt Bowden said, "The DHMO hoax played on the member this week is not a joke, it highlights a serious issue at the heart of drug policy making. Ms Dean demonstrated a 'ban anything moderately harmful' reflex. This approach is just downright dangerous." "Jacqui Dean has clearly demonstrated a lack of credibility in her requests to the Minister to consider banning water; She has also seriously embarrassed her National Party colleagues who can no longer have confidence in her petitions to ban BZP or anything else."