Denatonium Benzoate is a common bittering agent used in a variety of products such as antifreeze, windshield washer fluid , perfume, nail polish, paints, disinfectants, cleaning fluids, rubbing alcohol, paints, varnishes, solvents, and pesticides. In fact, it is considered the most bitter tasting chemical compound known. Since 1995 many states have passed legislation requiring the... Read more »