A general recommendation in the maintenance of a BBQ grill is to use a wire brush on the grates after every use and a thorough clean at twice a year or so depending on the amount of use the grill gets. A wire brush dipped in soapy water should do the trick in scrubbing off all the carbon of a gas grill. In the case of a charcoal grill, the old burned coals need to be thrown out. The next step is to take the grates along with any other removable part and place them in a bucket of soapy water to be scrubbed with a sponge after being soaked. Use a towel to wipe down the outside and begin re-assembling the parts once dry. The last step is to connect the propane tank and turn on the grill, allowing it to heat up enough to burn any residues from the cleaning process.

When cleaning rust off of a BBQ grill, use soap, warm water, and detergent to scrub the grill. It is best to avoid steel or wire wool and use a softer material such as a cloth or sponge for this. Make a paste out of vinegar and baking soda and apply this to the grill with the sponge or cloth, rinsing it with warm water after letting the applied paste sit between 20 and 30 minutes. Soda is also a solution to use in the removal of rust. Any removal part of the grill can be left soaking in a bucket of water overnight, then rinsed and scrubbed.