Sponges are a mainstay in most people’s kitchens. They make wiping down countertops, cleaning dirty dishes, and scrubbing stubborn grease off your pans a breeze (plus plenty more kitchen sponge ...

But is the sponge itself clean? The answer is probably no. "That thing is very dirty," Philip Tierno, a microbiologist and pathologist at the New York University School of Medicine, told Tech Insider.

Dear Wirecutter: My husband and I do not agree on when it’s time to throw out a sponge. While he likes to hang on to them until they’re practically disintegrated, I want to replace them ...

OK, I have my dirty sponge, and the first step is going to be to dampen it and then soak it in the sponge cleaner that came with the kit. The instructions say to put 20 milliliters, so I'm just ...