Today, I picked up some Meeco's Red Devil Woodstove Glass Cleaner. It smells like ammonia (NH3.) The label says "Contains Sodium Hydroxide," which is lye (NaOH.) I though it wasn't recommended to use ammonia on ceramic glass. Seems to me that if it smells like ammonia, it's ammonia. But I'm not a rocket scientist or a chemist, so what do I know? I'm confused...