If you want to clean the grill grates, it is easiest to brush it with a hard brush and to do it while the grill is still a little warm. Just be careful not to burn yourself. If the grill is cool and the dirt does not go away, you can use a kitchen sponge. Mix a little detergent with warm water in a tub and scrub hard. To remove dirt and grease collected at the bottom of the grill and on the lid, you can wipe with a cloth that you dip in water and grease solvents; just make sure that the agent is approved for grill use. You can also use a barbecue scraper for tougher dirt and burnt food residues. For the outside of the grill, only use a cloth and a little bit of liquid detergent.