A plan to help disrupt the supply of methamphetamine in Western Australia has been unveiled by the State Government and WA Police.

The new strategy will include the enlistment of 35 new officers, and the establishment of a dedicated team to target major transport routes for drug trafficking.

There will also be specialist teams targeting methamphetamine dealers across the state and an intelligence "meth desk" to support the teams, as well as a joint agency group to trace money trails.

WA Police Minister Liza Harvey said methamphetamine arrived from interstate and overseas, and there would be a strong focus on disrupting supplies along all possible transit routes.

"So we're talking about road, rail, air and also opportunities for people to penetrate Western Australia through our coastal or port connections," she said.

Stemming the flow of drugs sent in the post is expected to be a focus of the strategy.

Ms Harvey highlighted a recent operation where officers closed Australia Post's main distribution centre at Perth Airport and searched nine tonnes of mail, saying it was a good example of what the new team would be involved in.

The search uncovered more than 120 grams of methamphetamine, 16 MDMA tablets, five kilograms of cannabis, 100 vials of anabolic steroids, a handgun and ammunition.

Consideration is also being given to legislative changes that will enable vehicles to be searched for drugs without the need for reasonable suspicion, with Ms Harvey saying that could help disrupt the methamphetamine supply to remote indigenous communities.

"We need to make sure that we've got every tool that police can have to stop the flow of methamphetamine right throughout Western Australia but particularly into those vulnerable communities," she said.

Meth 'like a pathogen': Police Commissioner

Methamphetamine use in WA is almost double the national average, and Police Commissioner Karl O'Callaghan said its affects were all pervasive.

"From my perspective, meth is starting to infect every part of our community," he said.

"It's infecting families, it's infecting the road toll, it's infecting crime, it's infecting the health system. It's almost like a pathogen and we need to do something about stopping that pathogen, because it really is altering our lifestyle in Western Australia," he said.

In the past few months police have seized about 41kg of methamphetamine in WA.

More than 20 kilograms was found in a storage unit in the Perth suburb of Osborne Park last Tuesday.

"Something like 400,000 hits have been taken off the street in Western Australia in the last couple of months," Mr O'Callaghan said.

He said while the new strategy might not stop drug use, he was confident it would help disrupt supply and reduce other problems methamphetamine caused in the community.