How to clean stainless steel & cast iron grill grates
Stainless steel grill grates can tolerate intense heat and are typically more durable and rust resistant than other types of grates. Keep the grill hot and use a stainless steel bristle-free grill brush to scrub along the grates. The heat from the grill will soften up any stuck food debris for easy removal while scrubbing. When finished and the grill has cooled down, dip a towel into a container of vegetable oil and wipe it along the cleaned grates. This will help prevent rusting.
How to clean porcelain grill grates
Be very careful when using metal grill tools & utensils to avoid scraping, scratching or chipping these types of grates, they’re easily damaged so nylon brushes are recommended! Burn off any food leftover on the grates by heating the grill on high for 15 minutes. Once the grates cool down, brush them off thoroughly using a nylon grill cleaning brush. Apply vegetable oil once the grill has cooled down for an added layer of rust prevention.
How to deep clean all types of grill grates
Mix one cup of vinegar and two cups of baking soda together and pour the solution into a garbage bag or container large enough to fit your grill grates. Place the grates in the solution and let them to soak overnight. Be sure to put a cover on the container and/or fasten a garbage bag using rubber bands.
The next day, remove rubber bands or uncover the container and lift the grates out of the solution. Rinse very well with a garden hose and most of the dirt, grime and stuck-on food debris should easily fall off. If needed, scrub with a stainless steel bristle-free or nylon brush (depending on the type of grates you have) and rinse again.
Pat the grill grates dry and apply vegetable oil for rust prevention. There we go, all clean!
IMPORTANT: Read Your Instruction Manual. Some grates are very fragile (looking at you porcelain coated grates) and easily damaged from scrubbing and scraping. Be sure to read and follow the manufacturer's instructions down to the very last detail or you might end up voiding your grill’s warranty.