It really works! Remove rust naturally with lemon and baking soda from just about anything. Mix lemon juice and baking soda together, stir until you have a foamy paste (add lemon juice or baking soda as needed for proper consistency). Use a paint brush to spread paste on rust, then let it sit for a few minutes, or longer. Finally wipe away paste with paper towel or a cloth rag. Repeat as many times as necessary to remove all rust.