If mud has dried on the item, use dish soap and a kitchen scouring pad to get it off, then rinse it thoroughly.
For example, if you ride your bicycle in the rain, dry off the frame once you return home. Be sure to dry off any tools (e. g. , a saw, hammer, or screwdriver) and metal furniture that get wet to prevent them from rusting.
Purchase a dehumidifier at a local hardware store or home-improvement store. Remember to drain the dehumidifier when it fills up with water!
If the rust patch is small and the metal hasn’t begun to flake, scour it off using fine steel wool rated 000 or 0000.
Purchase a rust-preventing spray from any hardware store or home-improvement store. Make sure to use the spray outdoors or in a well-ventilated space. Aerosol sprays also work well for large vehicles or other sizeable iron objects that it would be tedious to paint by hand.
Alternatively, use grease to coat iron items on vehicles and bicycles, like bearings, nuts, bolts, and chains, to prevent rust. Be sure to reapply the oil or grease once it wears off.
While resin will protect iron from rust for longer than paint will, it’s also much more expensive. Look for anti-rust resin at larger hardware stores or auto body shops (since it’s often used on vehicles).
Powder coatings come in a variety of types, including epoxy, acrylic, nylon, and vinyl. Ask the metal professional applying the powder which option would work best for you. Powder coating is the best option for items that will be exposed to high heat, like car parts and bbq grills or smokers.
Avoid trying to galvanize items at home. Leave this project to a professional with the right equipment and knowledge so your item is thoroughly protected and ends up with a clean finish.