Your Kitchen Sponge
If you’re not switching out your kitchen sponge every week or so, then you might want to start. Why? Well, one 2017 study published in the journal Scientific Reports analyzed the bacterial microbiomes on 14 kitchen sponges.
The researchers found that they contained 362 different bacterial species. “Locally, the density of bacteria reached 54 billion per square centimeter of sponge tissue, which is similar to the microbial density of stool samples,” study author Markus Egert of Furtwangen University explained to Popular Science. Now that’s disgusting!
