Studies have emerged showing reusable bags such as the green bags commonly sold at Coles and Woolworths have to be used 104 times (weekly for two years) to make them more environmentally friendly than those grey single-use plastic bags.

This is because it takes more material and energy to make the green bags. It’s also worth noting that these bags are also made of plastic.

Other non-plastic alternatives can also be problematic.

A 2016 report by the NSW Environmental Protection Agency (EPA) found a cotton bag had to be used 131 times to equal the environmental impact of those single-use plastic supermarket bags used just once.

The catch with these bags is that jute is mostly grown overseas and so there is a carbon cost to transporting it.

It’s quite clear there is no perfect alternative and many people appear to be using this to suggest that a plastic bag ban is pointless or even just a way for supermarkets to make money.

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