Fire it Up With Baking Soda
Baking soda is a great option to clean your grates.
First, brush the grates with a soft bristle brush to remove as much rust as possible. Then sprinkle the grates with baking soda and set it on your grill. When you fire up the grill, the heat will cause the powder to bubble up and remove the rust.
Once the bubbling dies down, turn off your grill and let it cool down. Take the soft bristle brush and scrub the grates again.
An alternative way to use baking soda is by soaking the grill grates in a bucket. Letting the grill grate soak in the baking soda solution for about an hour will allow the baking soda to break down the rust.
Use Baking Soda and Vinegar Paste
Baking soda by itself can work wonders on rust, but when mixed with vinegar, it forms a potent paste that can get rid of most stains.
To use this paste, simply rub the paste on the rusted area and let it sit for half an hour. After this, rinse with warm water while scrubbing the grates with a soft bristle brush.
If you’ve tried the preceding methods and failed, it’s time to pull out the big guns.
When buying a rust removing solution, don’t use a generic solution that is made for household use. These rust removers may get into your food, and therefore you must ensure that they’re non-toxic.