Communities should name, shame and boycott businesses that prey on young people with unethical marketing of legal highs, United Future leader Peter Dunne says.
Dunne says consumer power is an appropriate response to the likes of a Hawke's Bay dairy selling a legal high and lollies together and he is encouraging customers to get their bread and milk elsewhere.
"It is not illegal, but it is clearly a low-life and unprincipled way to go about your business and it is preying on your own community," said Dunne.
"In six months this will be sorted with law that will make the industry prove its products are safe before they can be sold, and will put restrictions on how and where they can be sold.
"Personally, I would not want to give a cent to such a business and I think that kind of consumer power is a legitimate response to unethical trading - particularly when it is exploiting young people," he said.
"If you do not like that kind of behaviour from a business, then don't give them your money."
Dunne says such businesses are driven by profit and he is urging people to "hit them where it hurts".
"Let them know that you do not want them to operate in that way in your community."
Dunne said the temporary class drug notices brought in 18 months ago had taken more than 30 substances and more than 50 products off the market but they are playing catch-up until the permanent law comes in.