Some solutions to clean rust include mixing salt with lime or using baking soda with water. Another solution uses white vinegar and aluminum foil. It is best for individuals to apply these solutions with a soft brush, such as a toothbrush, instead of something abrasive, like steel wool.
To use a salt and lime solution to clean rust, sprinkle a bit of salt on the rust, and then squeeze lime on the salt until it soaks through. The solution should sit on the rust for a couple of hours. Remove the rust with the rind of the lime. Lemons also work as a substitution for limes, but make sure the item with rust is completely dry before applying this or any other solution.
Soaking the rust with white vinegar and then rubbing it with aluminum foil is another way to clean rust. Alternatively, if the rust is on a small item, such as a tool, it is possible to soak the tool in vinegar overnight, and it may not need to be scrubbed.
Baking soda and water are also options to remove rust. Place the baking soda on the rust, and apply water before brushing the spot with a toothbrush.