Police Minister Stuart Nash is urging Hawke's Bay retailers to report when gang members try to purchase big ticket items with cash, as the region attempts to clamp down on gang activity.

But some shops aren't convinced this would have any effect at all on gangs.

Nash, who met with the region's four mayors, and Eastern District Commander Superintendent Tania Kura this week, said they all agreed to work together to really make a difference.

"Our councils are working hard to enforce a ban on people wearing gang patches from their buildings and facilities. But we also need members