Shoprite Holdings, South Africa’s biggest supermarket chain, said on Tuesday it would pay customers for reusing its newly introduced recyclable bag as it joined domestic rivals in efforts to curb plastic pollution.

Supermarkets have come under increased pressure to cut their use of plastic as images of littered oceans and beaches become commonplace, shocking both consumers and shareholders.

South Africa does not have a law banning plastic bags. However, to reduce littering and discourage customers from buying them, South Africa increased the plastic bag levy in April by 50 percent to 12 cents per bag.

Shoprite said every time a customer reuses its new 100 percent recycled and recyclable plastic bag, which retails for 3 rand ($0.2088), at Shoprite and Checkers stores, they will get 50 cents off their grocery purchase.

“Changing consumer behavior by rewarding customers for re-using bags is a critical part of the retailer’s efforts to reduce plastic waste,” it said in a statement.

The retailer added that packaging of all broccoli, cauliflower, baby marrows, patty pans, baby gems, squash variety and fruit packs will switch to fully biodegradable and comfortable containers from early November.

Shoprite’s move comes weeks after department store chain Woolworths Holdings said it will remove single-use plastic bags from one of its stores during a six-month trial period. (Reuters)

•Shoppers leave the Shoprite store in Daveyton, South Africa May 23, 2018. REUTERS/Siphiwe Sibeko/File Photo