Help settle a disagreement?

R

We have and use both glass storage containers and knock off zip lock bags for storing leftovers. However, my husband and I disagree about which is cheaper to use. He says bags and I say container. His argument is that you have to rinse out and then wash the container in the dishwasher which costs more than purchasing the plastic bags all the time. We both agree that the containers are better for the environment though. Which would you say is cheaper to use?

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