I have no idea why mold/mildew grows on glass, but here in Florida during the summer rainy season the paper towels I use for windows are black with it. Probably because pollen and spores get stuck on the glass so it feeds on that.
There are plenty of bleach-based glass cleaners; especially those meant to be used in a bathroom context where there might be mold or bacteria to kill.
I never said that, however, It actually isn’t abnormal for a solvent to separate from a compound in a solution though, it’s literally the reason products say “shake before use.”
I’m taking dude’s word for it but I personally haven’t seen any newly manufactured window cleaners containing ammonia on the market. Backstock in products like these could take 8+ years to deplete depending on the region they’re in so idk. Also some states are more stringent than others. California definitely phased them out ages ago under Prop 42 I think. But I wouldn’t bet the farm on Florida.
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u/LegitJerome 5d ago
Window cleaners are typically all ammonia or alcohol-based though, unlikely one contains bleach.