I find that anything with ammonia works. You can find window cleaner with ammonia. After you wash with this, dry them off with newspaper and you will have sparkling clean windows!!
My husband is a professional at this and only uses a squeegee
well i use vinger and news paper to clean them, i use a spray bottle ,try it see how it works,
I have never seen the vinegar or ammonia used, but I have seen just a newspaper used. In the past years it worked great. With the improvement over time ( glass or newspaper ) it may not work anymore. I suggest that you still try the newspaper and see how that works. Good luck.
This is an excellent post: http://www.hometalk.com/1310307/no-streak-window-cleaner