Here's something utterly nauseating I hadn't before considered: Apparently reusable grocery bags can harbor bacteria. Meat products, according to this Cleveland Clinic video, are a common source of contamination - and commingling meat and produce in the same bag can lead to cross contamination. If you, too, shop with reusable bags, the video offers some useful tips for reducing the risk of contamination.
Now, if you'll excuse me, I have to go scour some bags.
Via CasesBlog