There are several effective rust removers available for cleaning metal surfaces. Here are a few options:

1. Vinegar: White vinegar is a natural and affordable rust remover. Soak the rusty metal in vinegar for several hours or overnight. Then scrub the surface with a brush or steel wool. Repeat the process if necessary.

2. Lemon Juice: Similar to vinegar, lemon juice contains citric acid, which can help dissolve rust. Squeeze fresh lemon juice onto the rusted area and let it sit for a few hours. Scrub the surface with a brush or sponge and rinse thoroughly.

3. Baking Soda: Make a paste by mixing baking soda with water until it forms a thick consistency. Apply the paste to the rusty surface and let it sit for an hour. Scrub the area with a brush or sponge and rinse well.

4. Commercial Rust Removers: There are many rust removers available in the market that are specifically formulated to dissolve rust. These products usually contain chemicals such as phosphoric acid or oxalic acid. Follow the instructions provided on the product label for safe and effective use.

5. Naval Jelly: Naval jelly is a popular rust remover that is effective on heavily rusted metal surfaces. Apply a thick layer of naval jelly to the rusted area and let it sit for the recommended time. Scrub the surface with a brush and rinse thoroughly.

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Remember to wear protective gloves, goggles, and work in a well-ventilated area when using chemical rust removers. Additionally, it's a good idea to test any rust remover on a small, inconspicuous area of the metal surface before applying it to the entire area to ensure compatibility and avoid any potential damage.