Stove knobs

Photo: Sergey Perterman/Hemera/Thinkstock

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The Unexpectedly Gross Kitchen Knobs You Use Every Day
We were surprised to learn that stove dials rank higher fridge-door handles and/or microwave keypads when it comes to the level of unsavory substances they attract. Turns out the controls that adjust your range's heat are quite dirty, since you often touch them when your hands are contaminated with food, and they're harder to wipe clean than those on other surfaces. Many dials can go in the dishwasher (check your stove's owner's manual); the 130- to 170-degree water will disinfect the bacteria from raw chicken and anything else.