No Scrub Method for cleaning stove burner grates: Seal in a plastic bag with a little ammonia (doesn't need to cover grates). Let sit overnight and the ammonia fumes will break down burnt on grease, etc. Next day, wipe clean with sponge.
Drip Pan and Burner Cleaning Using Household Ammonia
24 hours, three ingredients and very little elbow grease took my grungy burner drip pans from ugly to super clean the easy way. Some ammonia, a gallon zip lock bag for each drip pan and a Scotch bright sponge with a non stick pad on the back.
*How to clean drip pans naturally and without all of those scary chemicals. Quick and easy method. - Use dishwashing liquid soap & baking soda. Lather up, let sit for an hour in a plastic bag and then scrub for about 30 seconds!
Clean gas stove grates :: Slip grate into gallon size ziploc bag. Be careful not to put any holes in bag. Pour 2 or 3 Tbs ammonia. Seal bag and let it sit for 12 hours. Remove grate and rinse thoroughly.
clean gas stove burners - Take about cup of ammonia and seal it up with one of the burners in a large ziploc bag. You only need a little ammonia in the bag. You are not trying to soak the burner… you just want to seal it up with the ammonia fumes.