During the past week, retailers had contacted Dunedin police asking how they could differentiate themselves from those choosing to sell the product, proactive policing team Sergeant Chris McLellan said.
To ease their concerns, a poster saying "We choose not to sell synthetic cannabinoids" had been produced and distributed to concerned dairy owners byDunedin police.
And Kronic may disappear from Oamaru shops after political, religious and law representatives visited retail outlets urging them to stop selling the legal social drug.
If they do not, Kronic outlets could be targeted in a name-and-shame campaign urging people to boycott them.
Oamaru police community constable Bruce Dow and Waitaki Mayor Alex Familton, accompanied by Catholic Church parish priest Fr Wayne Healey, visited eight retailers on Friday and Saturday.
The visits were independent of each other, but resulted in an undertaking the shops would stop selling Kronic if all outlets do.
Mr Familton and Fr Healey are determined to see Kronic banned.
Mr Familton plans to return to the shops in about a week.
If they continue selling the drug, he "will take all possible steps" to make them to stop.
Fr Healey said community leaders needed to have the courage to speak up about "a very harmful drug".
Mr Familton yesterday wrote to Government ministers and Waitaki MP Jacqui Dean calling for urgency to ban Kronic.
Dunedin's 10 o'clock Dairy co-owner Shuping Liu said the store decided not to stock cannabinoid products because of safety concerns, and welcomed the poster initiative.
"People can make a lot of money, but I am not like that."
Last week, police identified 34 retailers of cannabinoids, mainly in North and South Dunedin, and spoke to 32 of them.
Five of the retailers were no longer stocking the product, with shopowners citing health risks, social costs and safety - as well as having to hire extra security staff - as the reasons.
Others reported being the victims of abuse, threats and thefts as a result of stocking Kronic.
Yesterday, a 20-year-old man was charged with theft after allegedly stealing a $40 packet of Kronic from a Dunedin dairy.
Police arrested the man in Surrey St about noon after the owner of the Balmoral Dairy, in Hillside Rd, reported the man allegedly tried to swap a 3g Kronic packet wrapper filled with other material for a new packet.
Sgt McLellan said information suggested members of the public were "expressing their annoyance to shopkeepers".
More than half of stores surveyed by police had received complaints from the public over their decision to stock the product, he said.
"Several ... have reported they have lost custom as a result of stocking these products."
