I have a dumb question: why heat up the vinegar? Does it help with some kind of chemical reaction in the mixing or does heat just help to make the mixture to be more effective so it needs to be used before it cools down?
My apartment has incredibly hard water, so sinks, toilets, and showers always look rough. It just now occurred to me that maybe rain x on the glass after cleaning could be a decent preventative measure unless somebody can tell me why that’s a bad idea?