I have tried many cleaning products through the years but vinegar as glass cleaner is amazing. I grew tired of products that promised results but fell short. I also didn't like the smell because most of them made me sneeze and/or my eyes water. Lately, I (like many others) have decided to go eco friendly for both the earth and personal health issues. I have found that white vinegar and water work the best for me. Using equal amounts, I put in spray bottle, spray and wipe off with recycled paper towels. If I run out of paper towels, I use old white t- shirts that I have cut up and they work very well also. I find that this solution works better than any bottled product. It leaves the windows streak free and shiny. I definitely like the smell of vinegar better than the commercial brands and it is better for me too. As an added bonus, it is quite cost effective and you can buy white vinegar about anywhere.
Vinegar Glass Cleaner is the Best