Queensland legislation came into force over the weekend banning the use of single use plastic bags from being provided in supermarkets, takeaway stores, pharmacies, goods sold online and markets.

Woolworths and Coles announced a nationwide ban on the bags at the same time, which has been met with mixed responses and confusion.

To support the transition, Woolworths has offered free reusable bags for a week and Coles will have additional registers open.