athomesewing, how timely your post is. Today I began to clean my stove and the burner liners were really bad. I actually bought two new ones, but the other two are soaking now. Tomorrow I will buy the ammonia and try it. Thanks

Please let us know if it worked for you too. I'm hoping that it wasn't a fluke.

It's not a fluke. I buy cheap store brand sudsy ammonia and use it for any greasy dirty job, like soaking burnt pots.

If you want to do oven racks or BBQ grills, put them inside a plastic trash bag, dump in a cup or two of household ammonia, and seal the bag.

I leave mine in the sun on the patio for a couple of days, and then it's an easy brush job to lean the grills.