Reusable Grocery Bags Crawling with Bacteria

The best way to truly protect yourself and your family is to once a week wash the bags in with your normal laundry with color safe bleach and let air dry. By air drying you can kill many bacteria!


Yikes! Your reusable grocery bag might contain fecal matter with E. coli, salmonella, and a wide assortment of other not-so-friendly bacteria!

University of Arizona researchers discovered “a serious threat to public health, especially from coliform bacteria, the infamous E. coli, which were detected in half of the bags sampled,” says Charles Gerba, U of A professor and co-author of the study.

And just when we were proud of ourselves for being green….germs are lurking!

A grocery bag put into a hot trunk is the perfect breeding ground for bacteria. Bacteria from fresh meat may cross contaminate with other foods and stick around long after the food is gone, hiding in the walls and in the seams and folds of the bag.

These types of bacteria are extremely dangerous for young children, who are “especially vulnerable to food-borne illnesses.” Salmonella, for instance. The study included 84 randomly selected grocery bags from shoppers in Tucson, Los Angeles, and San Francisco. “Bacteria levels were significant enough to cause a wide range of serious health problems and even death.”

Death!!! As an environmentally friendly consumer, I want to reuse my grocery bags and save the world from unnecessary plastic, but as a mom, I want to make sure my family’s health is not at risk.

Do your bags look or smell bad? Like sour milk, for instance, or spoiled meat? There’s a clue. The recommended solution: Wash your bags after each use. Bleach them, in fact. As a busy mom, I find this not feasible. Don’t we all have enough laundry already? More water and detergent down the drain is not a green-living solution.

The study, including work done at The University of Arizona and at Loma Linda U, did not speculate on where all this bacteria comes from. Is the store really dripping with sewage? Or does it come from unclean hands, including your own?

Not everyone takes this study at face value, since it was funded by The American Chemistry Council, which also works with businesses that make and use plastic.

But the scare is there. Protect your family. Make sure the surfaces that touch your food are clean and safe.

The best way to truly protect yourself and your family is to once a week wash the bags in with your normal laundry with color safe bleach and let air dry. By air drying you can kill many bacteria!

Author: TheSaltyChef

The Salty Chef lives in AZ

5 thoughts on “Reusable Grocery Bags Crawling with Bacteria”

  1. Thanks so much for publishing this! I never knew that plastic bags could carry bacteria! I usually throw them away if I see blood from meat and milk but thanks for letting me know about this!

  2. Good information. I’ve been thinking about buying some reusable cloth shopping bags, but I haven’t yet taken the plunge. When I do I’ll have to remember to wash them weekly in the laundry. Good advice.

  3. There’s a chance that anything your groceries touch will have germs including the fridge shelves and I’m pretty sure you’re not disposing of it every week. I do throw my bags in the wash on a regular basis and air dry in the warmer months. You don’t need to be scared, just smart.

  4. Holy Crap!

    I never even thought of this.

    And the more I think about it, I’m giving myself shivers.

    We don’t really do anything to look after the cloth bags we reuse and now I can see the flaw in our logic.

    I am so glad I came across this before I make someone in the family sick, or worse (don’t even want to think about that)

Leave a Reply

Your email address will not be published. Required fields are marked *

CommentLuv badge
This blog uses premium CommentLuv which allows you to put your keywords with your name if you have had 3 approved comments. Use your real name and then @ your keywords (maximum of 3)