Vinegar has a pH of around 3, making it roughly 10,000 times more acidic than water. That acidity is precisely what makes it useful against hard water mineral deposits, and precisely what makes it destructive on marble, wood, stainless steel, rubber gaskets, and phone screens. Baking soda carries fewer of those acid-related risks, though its mild abrasiveness creates its own incompatibilities with delicate finishes and screens. Neither product is a universal cleaner. The honest answer to the...