Is naming-and-shaming shops allegedly selling illegal vapes, smokes working?

This store in Northbridge was one of many issued with a closure notice under WA's new illegal tobacco laws. (ABC News: Lauren Smith )

Almost 50 shops across suburban Perth have been taped up and plastered with large closed-for-business signs after being forcibly shut by authorities cracking down on alleged illegal vape and tobacco sales.

Health authorities say over the past two weeks they have seized more than $11 million worth of illegal product.

Millions of cigarettes and tens of thousands of vapes are seized in the recent crackdown. (Supplied: WA Department of Health)

It is part of Operation Claudere, a joint effort between the WA Department of Health, WA Police and the Australian Border Force.

Large "store closed" signs are seen after authorities forcibly close the shops. (ABC News: Emma Wynne)

The department's Shane Giblett said the operation relied heavily on public tip-offs, and hit stores which had previous breaches.

"We get information from parents of students who are concerned about their children vaping from the nearby stores.

Shane Giblett says the operation relies heavily on public tip-offs. (ABC News: Mya Kordic)

"We are going to continue closing stores when we have the evidence to do so, and this will be part of our business-as-usual moving forward."

Boasting at a press conference on Wednesday that the operation was the largest compliance blitz under WA's new tobacco laws, Mr Giblett said it sent a strong message.

The dozens of impacted stores have been handed short-term closure orders, which require the premises to be shut for 90 days.

According to authorities, allegedly illegal tobacco products have been seized from dozens of stores. (Supplied: WA Department of Health)

While the closure is temporary, Mr Giblett said it would be costly for the affected businesses.

More than 140,000 illegal cigarettes have been seized and six stores ordered to close down, days after Western Australia's new tobacco laws came into force.

"When they have to close for 90 days, they still have to pay their rent, they still have to buy their electricity," he said.

"Anybody entering it without an exemption commits an offence, and if you reopen the store and sell prohibited products you commit serious offences."

It doesn't end there — prosecutions could still be on the cards.

Notices like this one at a suburban shopping village in Morley have been put on traders across the metro area. (Supplied)

"Part of the follow on is to examine the evidence we have and if we have evidence of breaches of the [Tobacco and Other Products Control Act], we will c