If you were to think of the dirtiest place in your house, you probably wouldn't think of the kitchen sink. According to WebMD, you should because it's actually worse than your toilet.
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Here's the explanation:
Although the mere thought of retrieving anything from your toilet bowl may be enough to make you sick, your toilet may be cleaner than your kitchen sink, says Eileen Abruzzo, director of infection control at Long Island College Hospital of Brooklyn, New York. Food particles from plates left to soak or rinsed from dishes on their way to the dishwasher can serve as a breeding ground for illness-causing bacteria, including E. coli and salmonella. They can get on your hands or spread to foods.
Although most people take steps to disinfect their toilet bowls, few give their kitchen sink the same consideration, Abruzzo tells WebMD. "They rinse their sinks with water and assume they are clean — but they're not."