How to clean a stove in 45 minutes

So I have this beautiful white stove with grey porcelain grates, and no matter how much I have scrubbed, scraped, and chipped at it, it has not been really clean in years. Not from a lack of trying, just because, well, I have a life. Then the other day I was surfing eHow and discovered a tip from a lady who must be an angel from Heaven. She said she puts her porcelain grates in a ziploc bag with 1/4 cup of ammonia and soaks them overnight, and the stuff wipes right off. I'm thinking, okay, not my stuff. She doesn't have stuff as stubborn as my stuff, but I'll give it a try. So I did. I put my grates in ziploc bags with 1/4 cup of ammonia and soaked them overnight and guess what? She was right! The fumes were nose cleansing, and I had to open the windows and wear rubber gloves, but when I took them out of the bags and ran them under the water in my kitchen sink the stuff almost rinsed off! I'm not joking! I did have to scrub at them a little with a sponge scrubber and chip at them with a butter knife to get off a few little particles that remained, but after only 45 minutes, my stove that I had chipped at with little success for 5 hours one day was clean and shiny as new. This is the current condition of my 10 year-old stove. Thank you eHow lady!! Mwaaaa!