Cleaning the grill after each use helps prevent flare-ups next time.
After each use of your gas grill, turn the grill settings to high for 10 to 15 minutes with the lid closed. Then, simply brush off the grill rack using a brass bristle brush.
For a charcoal grill, remove the grill rack and wrap it in wet newspaper. Let it stand about 1 hour, then wipe it clean. If necessary, use a stiff brush to remove stubborn burned-on food.