Gas range stovetops are great for cooking, but have a tendency to get greasy buildup stuck to the burner grates. There's an easy and cheap way to clean these without scrubbing like crazy. Remove the grates from the burners and place them in a zipper freezer bag. Pour 1/4 cup clear liquid ammonia into the bag, seal it, and let it sit for 12 hours. If you're worried about leaks, but the bag on a cookie sheet while it soaks. After 12 hours, remove the grate and rinse with warm water, gently scrubbing with a washcloth. Voila! Clean stovetop grates with minimal effort.