Two Dunedin stores continued to stock and sell Kronic despite a nationwide ban on synthetic cannabis products coming into force earlier this week.
On Tuesday - the day a 12-month ban on synthetic cannabinoids took effect - the proactive policing team visited 28 synthetic cannabis product retailers to see if they had taken the banned products off their shelves.
"The visit was to ensure the dairy owners were all up to speed with the legislation changes," Sergeant Chris McLellan said.
He confirmed two shops - a North Dunedin dairy and a South Dunedin retailer - were still stocking the product and had even sold some the morning of the police visit.
It appeared the retailers were confused about when the ban came into force, and they would not face a penalty, he said.
"They both advised us that the manufacturers of Kronic had indicated to them it was safe and legal to sell the product for the entire day, so there was miscommunication there and we clarified that for them."
Retailers said there had not been "a major run on the product" before the ban, he said.
While it was not illegal for people to possess or smoke the product, anyone with more than 56g could face a charge of possession for supply of a class C-controlled drug.
People who were in possession of the product and no longer wanted it could surrender it to police, he said.
