White Vinegar
It is best to use this method on surfaces that have significant rusting, especially if the item can be submerged. It is very effective as a rust remover as the rust simply reacts with the vinegar and dissolves.
How to Remove Rust With Vinegar. White vinegar and baking soda are a well-known duo for their efficacy and flexibility as household cleaners, and they can even be used for removing rust from metal when combined with salt.
While hydrogen peroxide can speed the rusting process, it can also remove rust. In a bowl, place equal parts cream of tartar (a mild powdery acid used in baking and available at grocery stores) and baking soda. Add a few drops of hydrogen peroxide, just enough to form a paste.
“When you add peroxide to dish soap, it breaks down into oxygen and water. The soapy water then traps that oxygen, creating bubbles, making your dish soap extra foamy.”
Hydrogen peroxide is known to dissolve accumulated rust from metal surfaces and can even break up the entire tarnish in some cases.
The Evapo-Rust Rust Remover earned our best overall pick because it's incredibly effective at removing years' worth of rust build up in just one application. The water-based formula is organic and non-toxic, so you won't have to worry about damaging surrounding materials like plastic or rubber.
What Makes Coca-Cola Such an Effective Cleaner? Coca-Cola is carbonated, which allows it to dissolve with metal oxides and break up rust on a variety of metals and alloys. Phosphoric acid also gives it rust-busting power, while citric acid makes it an effective stain remover.
Vinegar and Baking Soda:
Backing powder can work wonders with rust. It makes an effective paste mixed with vinegar. Rub the paste onto the rust spots and leave to work for at least 30 minutes. Rinse off with warm water.
For more stubborn rust, try using white vinegar. The acetic acid in this common household product is acidic enough to dissolve rust. You can soak smaller things like earrings, wipe it onto a surface with an old cloth, or just pour it directly over rust spots or bolts and screws that have rusted together.
Soak your tool in a vinegar bath.
Place your tool in a jar or other container, then pour in just enough vinegar to submerge all the rusted parts. Soak the tool for 12 to 24 hours, depending on level of rust and type of vinegar used. (Sometimes, even just an hour or two will do for small amounts of rust.)
Baking soda works well on items with light rust stains. It also works well on items made out of thin metal, like knives. To use this method, simply mix enough water into baking soda until you are able to form a thick paste.
Most people know WD-40 Multi-Use Product as a lubricant, but it was originally used as an anti-corrosive by the aerospace industry to prevent spacecraft from rusting. WD-40 can help remove rust from metals like iron, chrome, and stainless steel without further damaging the surface of the metal or removing the paint.
Hydrochloric acid (which is also called muriatic acid in its diluted form), as well as phosphoric acid and sulfuric acid may be used in rust removal formulas using strong acids.
WD-40 Specialist® Rust Remover Soak quickly dissolves rust and restores tools, equipment, and surfaces to bare metal without chipping, scraping or scrubbing. Great for removing rust from tools, metal, cast iron, chrome parts, and more without harming paint, gaskets, trim, or other surrounding parts.
Don't mix hydrogen peroxide with vinegar
Hydrogen peroxide and vinegar can be used on the same surface as long as it dries in between applications but they should never be mixed. When the two are mixed, it creates peracetic acid, which can harm the skin, eyes, throat, nose and lungs.
Tools that are too large to fit in a container can be wrapped in a cloth soaked with vinegar and sprinkled with salt, then put in a plastic bag. The vinegar-and-salt mixture needs time to break down the rust. This can take anywhere from one to three days.
Don't mix hydrogen peroxide and vinegar together in the same mixture. This can create peracetic acid, which may be toxic and can irritate your throat and lungs, eyes and skin. You can, however, alternate spraying hydrogen peroxide and vinegar on a surface. Just make sure to wipe the surface between sprays.