As any avid cook should know oil and grease spatter. They get heated and reheated and, in seemingly no time at all, you have a disgusting coating that will NEVER scrub off!
But why buy expensive cleaners and/or use a lot of elbow grease when cheap ammonia and 12 unattended hours can do the job just as well.
You will need:
(You can use your trusty Handy Andy)
A ziploc bag big enough the place the grates in.
A baking tray.
Take about 1/4 cup of ammonia and seal it up with one of the burners in a large ziploc bag. You only need a little amonia in the bag. You are not trying to soak the burner…you just want to seal it up with the ammonia fumes.