Vinegar Solution: Your Best-Fit Cleaner

Vinegar Solution: Your Best-Fit Cleaner

White vinegar is a dilute acetic acid, typically about 5% acidity, and that acid is why it works on hard-water spots, soap scum and the cloudy film on glass. Those deposits are mineral-based, and a mild acid dissolves minerals that plain soap only smears around. A common home starting mix is 1 part white vinegar to 1 part water in a spray bottle for glass, mirrors, faucets and glazed shower tile. That ratio is a habit, not a published standard, so start weaker on anything you are unsure about. For heavier scale you can use it stronger and let it sit a few minutes, but test first and rinse well afterward so acid does not linger on the surface.

Vinegar is also a useful, inexpensive way to freshen the areas around sinks and tubs, but it has clear limits. It is not an EPA-registered disinfectant, and EPA states that it does not review the effectiveness of common household ingredients like vinegar, so it cannot verify how well they kill germs. Do not count on vinegar to sanitize a cutting board or a sick room. It can also leave a pickle smell in a closed bathroom, so open a window. If you need germ killing, use an EPA-registered product to its label directions, or a bleach solution mixed to CDC directions.

Where not to use it: keep it off calcareous natural stone such as marble, limestone and travertine. The Natural Stone Institute says products containing lemon, vinegar or other acids may dull or etch these stones. If you have granite or an engineered quartz counter, ask your fabricator before using acids. Also check the maker's care guide before using vinegar on grout, unsealed or waxed wood, cast iron and rubber seals; for hardwood floors the NWFA advises a cleaner made for the floor's finish and no wet mopping. For phone, tablet and computer screens, follow the device maker, since Apple, for one, tells users to avoid household cleaners on its displays. If you are unsure whether a surface is acid-tolerant, use dish soap instead and check the surface safety checker before you spray.

To mix it safely, only ever combine vinegar with plain water. Poison centers warn that mixing bleach with an acid such as vinegar releases chlorine gas, and that mixing vinegar with hydrogen peroxide forms peracetic acid, which the Missouri Poison Center describes as corrosive and irritating to skin, eyes and the respiratory system; Transport Canada's CANUTEC calls it corrosive and toxic. So never store vinegar and peroxide together in one container, and do not spray vinegar on a surface you just cleaned with bleach or ammonia. If a mix goes wrong, move to fresh air right away, open windows, and call Poison Help at 1-800-222-1222 (America's Poison Centers, US). Call 911 for trouble breathing, chest pain, or collapse. Keep the label on the bottle so no one mistakes it for a drink.

Source: EPA, Can I use common household substances to kill the novel coronavirus?; Missouri Poison Center, Some Things Just Don't Mix; Washington State Department of Health, Dangers of Mixing Bleach with Cleaners; Transport Canada CANUTEC, Improper mixing of common household cleaning products; Natural Stone Institute, consumer guidance on cleaning natural stone; National Wood Flooring Association, Maintenance; CDC, Cleaning and Disinfecting with Bleach. Note: the 1:1 ratio is a common home practice, not a published standard; confirm acidity on your bottle's label.

General household-cleaning guidance, not medical or professional advice. The label on your product always wins; never mix cleaning products. For a poisoning emergency call Poison Help at 1-800-222-1222 (US), or 911 if someone has trouble breathing.

How Vinegar solution compares

* Illustrative starting amounts and notes, rounded -- use the calculators below for your exact numbers, and always check your product label.