Most of us are now fully signed-up to the idea of cutting plastic waste by taking reusable bags to the shops with us.
But could our new shopping companions be having a negative effect on our health?
According to a recent study, almost all reusable bags tested were found to be harbouring bacteria.
But that doesn't mean you should return to plastic.
Instead, there are some very simple things you can do.
Find out more in the video above.