Got a windshield that needs a good cleaning? Try Bon-Ami , use as a paste and it will make you glass like new. Do not use it on vinyl window tint or it will scratch it. Only on glass.!!!
I stopped using corn starch when I found the EO glass cleaner. I did not like the dust that the corn starch mix made. I've thought about going back to it again, but now I have tint in one of my cars.