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 ...

Disinfect your cleaning tools regularly. Make it a habit to clean mops, dusters, and brooms at least once a month. Let ...

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.

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 ...