Twenty reports were received on stores that may have escaped the single-use ban on WA plastic bags in the first month since the new laws came into force.
No one involved the major supermarkets, while about half referred to small and medium businesses and the other half of complaints related to national chain stores.
From January 1, retailers who distribute lightweight plastic bags can be fined up to $ 5000. Customers who suspect a retailer will use banned bags may report to bagbanwa.com.au.
The ban applies to all retailers, not just supermarkets, including newsagents, takeaways, pharmacies and discount stores.
National Retail The spokesman for the David Stout Association said that 20 reports had been made and that they would be investigated.
He said that dealers were "well and truly" prepared for the new laws and, if someone had broken the ban, said that it was very likely by chance or by the wrong supply of bags that did not respect the specifications.
"In most cases it's not mischievous," said Stout.
The WA government said the ban was making a difference.
"From July 1