I always have a problem with streaky windows. Those darn windows never look as good as on the commercials. No one would be able to walk into my windows! I have ugly streaks everywhere. So when I found an article on how to get streak free windows, I was paying attention!
The article suggested using a squeegee. Spray the window and then use the squeegee pulling it down, overlapping each stroke. Wipe the squeegee after each stroke. But the best advise? Don’t wash windows on a sunny day since the sun will dry the liquid you are using faster than you can wipe and that’s what causes those nasty streaks! Now I just need to go out and buy a squeegee!