WOOLWORTHS says it will hand out free reusable bags for the next 10 days as its customers get used to its ban on single-use plastic bags.

Woolies stores in NSW, Queensland, Victoria and Western Australia stopped providing free single-use plastic bags last week and the offer of the reusable bags - which would normally cost 15 cents - will only apply in those states and until July 8.

"We understand it's a big change and we know that remembering your reusable bags every time you shop isn't easy," Woolworths said on its website on Friday.