Use a wire brush to remove loose dirt and rust from the object. Do not use Naval Jelly on aluminum, chrome, fiberglass, cement, marble or plastic.
Brush on a liberal coating of Naval Jelly. Do not use it in confined spaces. Wear rubber or plastic gloves and safety glasses, goggles or a full-face shield while working with Naval Jelly.
Wait 15 minutes for the Naval Jelly to remove the rust.
Rinse the object off with a garden hose. Inspect it, and if there is any remaining rust, repeat the process.