How to Recover Rusty Things in 2 Minutes and Effort-free

Raw potato. It contains oxalic acid, a very effective agent in the removal of mold and rust. Rub a potato directly on the rust. To enhance the effects spread a little baking soda before rubbing.

Foil paper. Cut several pieces of foil, about three or four square centimeters, and soak in water. Rub the foil paper on the rusty metal several times if necessary: the rust will be away quickly