A further three people were arrested and charged in Wellington on Sunday in connection with the network.

A total of 38 people have now been charged.

On Monday, Orana Mid-Western Police District commander Peter McKenna said police now needed community assistance.

"People might assume or think police know what's going on, that we know about every drug dealer.

"But sometimes it's the case that we need that final piece of information to really put us on the right track so we can make a difference," Detective Superintendent McKenna said.

"We can't always tell the community what we're investigating, for operational necessity.

"But now we've gone into the overt phase of this operation and I'm happy to say to people out there, if you want to supply prohibited drugs, you can expect police to come, as I said, we won't just be knocking on your door, we'll probably be knocking in your door."

Supt McKenna said he was already very proud of the police investigators and the wider Wellington community.

"We've got ongoing information coming in from the community, and we expected that.

"We're working with the community to make sure we rid it of this insidious substance people are peddling out there," he said.

Inquiries by police in 2019 revealed the syndicate was sourcing prohibited drugs - mainly methylamphetamine (ice), but also MDMA and heroin - from Sydney, and distributing them to regional towns across NSW.

Supt McKenna said these were harmful substances that police wanted removed from our streets.

"They're not the sort of things we want our kids to become addicted to, they break down families, they break down relationships, they have a major cause and effect to all sorts of crime," he said.

"It's just something we want to rid the community of, we want to let the suppliers know we will not let you work unabated in this area, making money off other people's vulnerabilities."

Police are encouraging anyone with any information to contact them at the Dubbo or Wellington Police stations, or if they wish to remain anonymous, they can call Crime Stopper on 1800 333 000.