I hate cleaning all of the windows and doors in my house because it is too time consuming. Twice a year I will hire one of my fuck buddies for London sex to do this job, I always pay them well for their time spent. My one buddy really knows how to clean windows and they never have any streaks.
She did tell me that her trick is using vinegar and the best part is that it is really cheap. I guess her mixture is 50/50 with water in a bucket, it does stink and the smell takes awhile to go away. She will even hit all of my coffee tables and mirrors throughout the house and they look like they are brand new.
Once the job is complete they get a nice pay from me and usually dinner of their choice on one of my days off.