What you shouldn't clean with white vinegar are solid wood, natural stone, cast iron and electronic screens.
Vinegar is a great natural cleaning solution for most things, but because vinegar is highly acidic the vinegar can strip wood sealants, rust iron, etch stone and even ruin anti-glare coatings on devices.
You should also never mix any vinegar with chlorine bleach as it leads to toxic fumes that can be deadly.
Natural stone that vinegar should not be used to clean includes marble, granite and limestone.
The acidity in the white vinegar etches and also dulls the natural finishes of the stone.
The acidity of the white vinegar can also eat away at the protective sealers that are applied to the durable stone like granite, which eventually ruins the shine of granite or other natural stone.
Instead, when cleaning natural stone, wipe the surface down with a microfiber towel and some mild dish soap or a specialty stone cleaner.
Sold wood that you should not use white vinegar to clean includes solid wood floors and solid wood furniture and waxed wood.
The white vinegar can strip the protective finish or wax off of hardwood floors and wood furniture.
When this happens, it leaves the wood looking dull, cloudy or even scratched and can even void the manufacturers warranties.
Instead, when cleaning solid wood and waxed wood, use cleaners that are specifically formulated for the wood type.
For electronic screens, if white vinegar is used on the electronic screens, the vinegar breaks down or damages the anti-glare, anti-fingerprint and touch sensitive coatings on the electronic devices.
Instead use a soft, microfiber cloth that is dampened slightly with some plain water, or a highly diluted drop of dish soap.
When white vinegar is used on cast iron cookware like skillets and pots, the acetic acid in the white vinegar will eat away at the polymerized oil layer, which is the seasoning that gives the cast iron it's non stick surface.
And with prolonged exposure, it can even result in the metal pitting or rusting out.
Instead to clean the cast iron cookware, use hot water and a stiff brush or scrub the cast iron cookware with a paste of coarse salt and a bit of oil.
You should also avoid cleaning high quality cutlery and sharp knives with white vinegar as the constant exposure to the acid in the vinegar can pit, scar and even corrode the fine and delicate edges of sharp kitchen blades and instead, simply use warm water and liquid dish soap to clean the knives.
And also avoid using white vinegar on clothes irons and rubber hoses as the acid in vinegar can eat away at the synthetic rubber gaskets, hoses and internal linings in some washing machines, clothes irons and dishwashers.
Instead check your appliance user manual to ensure vinegar descaling won't void the warranty and cause any degradation.