Whanganui Police and health authorities have checked that legal highs are no longer being sold in Wanganui.
They have visited the two Victoria Ave stores that were able to sell the substances up until Thursday last week.
Senior Sergeant Paul Baskett said police ensured any unsold stock was being returnedto the suppliers within the required time frame. They didn't find any breaches of the new law, and didn't anticipate any.
They also checked that those stores had security measures, in case a user of the substances tried to rob them.
The Whanganui officer in charge is Community Constable Keith Butters, and he will continue to work with the former outlets.
Asked if officers would have a more relaxed attitude to people found using or possessing the substances in the next few weeks, given that some may be addicted, Mr Baskett said officers always had individual discretion in the way they dealt with things.
The Psycho Active Substances Amendment Act removed all psychoactive products from the New Zealand market and also banned testing them on animals.
The amendment cancelled all licences to sell the products, either wholesale or retail, and made it illegal to possess and supply them.