Simple Ways to Wash Outside Windows: 14 Steps (with Pictures) - wikiHow
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Avoid using commercial window cleaners and instead scrub your windows with a simple solution of clean, cool water and liquid dish detergent. Make sure to squeegee them clean using the proper technique to avoid streaks. Work on a cool, cloudy day so the windows don’t dry too fast.
The Best Way to Clean Outside Windows Without Streaking
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The best way to clean outside windows without streaking is a combination of preparation, the right supplies, and proper technique. Using high-quality window cleaning tools, choosing the right solution, and cleaning in the right conditions all contribute to a streak-free finish.