She believed the K2 attracted "undesirables" who then loitered on the street while they were affected by the substance. There had been an increase in vandalism in the area, and she also had concerns about long opening hours that further increased access to the drugs.
The two dairies on Gordon Rd, the Raureka Superette and Lotto Shop and the Food Store, were stocking K2 and other legal high drugs when Hawke's Bay Today visited.
Owners of the stores, opposite and alongside Raureka School, declined to comment.
However, Mrs Johnstone said she had raised the concerns with owners and they had not changed their practices.
"There are young teenagers going there to get K2 and it's unsafe," she said.
Associate Health Minister Peter Dunne urged people to boycott unethical retailers, and is pushing for tougher laws by midyear. Previous synthetic high products such as Kronic Pineapple Express and Juicy Puff Super Strength have been made illegal, but newer products - changed to get around the law - keep appearing.