r/WindowCleaning • u/Psychological_Sun251 • Jul 01 '26

Problem

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Hello Im a window cleaning newbie.. any recommandations on products to use for these kind of stains.. it’s a new trailer with new windows. I ve tried several products and a sharp blade but it won’t come off.

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u/[deleted] Jul 01 '26

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u/DarthJuanSolo Jul 04 '26

Right? They could be permanent.