Oven Cleaner is, if I recall, a combination of lye and ammonia. A trick we used to use, and still use when I think about it, is to place oven grates, stove top grates, barbecue grates, etc, into a large, plastic garbage bag, with a bowl of ammonia. let it sit overnight. Everything just wipes off of the metal with a damp sponge, and there is no goop to clean up from oven spray. The fumes from the ammonia is all it takes. Everything comes out sparkling after the wipe-down. Dispose of the ammonia as you would normally. And remember, ammonia is naturally produced in nature and is part of the life cycle. In environmental classes, you learn that there is a part of the natural order called the ammonia cycle. Don't be fearful of the stuff. Just use properly, and don't use in an enclosed area without ventilation.
Seeeeeeya; Chief Longwind of the North
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