Remove rust from gas grill grates using a baking soda solution, commercial rust remover or a stiff wire brush. Cleaning supplies include a bucket of soapy water, a sponge, rust remover, a plastic brush and a wire brush for use if the other methods do not work.
- Clean the grill grates with a plastic brush
Place the gas grill grates in a bucket of soapy water, and scrub them with a plastic brush. Scrub at the worst rust build-up, and try to get as much of it off as possible. Switch to a sponge, and clean the entire grate with water.
- Apply a rust-removing solution
Spray or soak the grates in a rust-removing solution. Start with the gentlest solutions first, and work up to more intensive ones if the initial cleaning fails to remove the rust. Baking soda solutions, vinegar and salt, vegetable oil and commercial rust removers are available options. After soaking the grates, scrub them with a plastic brush to remove rust.
- Use a wire brush or steel wool
If using a rust remover fails to remove the rust, use steel wool or a wire brush to remove it. While effective, using wire or steel wool scratches the finish and makes it more likely that the rust will return.