There are quick and easy ways to keep grill racks and exterior surfaces sparkling clean and ready to use.  Try sticking your grill racks in a self-cleaning oven.  It's already designed to use extremely high heat to melt away stuck on foods and grease.  You can also let nature help with the scrubbing by placing racks on the grass and spraying with your favorite cleaner.  The dew soaks in and all you need to do is rinse and fire up the grill again