Any offending will be followed up.
Pasilika Naufahu and two others are now awaiting sentencing.
Police say they are in regular contact to remind them of the rules.
"We've got to make it less attractive for people to join gangs."
They show off lavish, luxurious, and expensive lives to entice newer gangsters.
The number of inmates from one gang has risen 150 percent.
"We've got to work out what's the underlying cause that leads to the demand and try and focus on fixing those issues."
Tuesday's raids mark the culmination of a lengthy investigation into the Mongols MC.
The leader of a Hawke's Bay Mongrel Mob chapter is among those arrested.