Anyone tried this? My windshield had so much grime on it from pollen today I tried cleaning it 3 times with Windex. The wiper marks were still there along with some grimey film. I googled polishing windshields and found several forum posts where people had success using various kinds of polish. I have turtle wax polishing compound on hand and tried it. WOW! I'm shocked. First time in in years I've gotten the wiper streak marks and all the road grime film off. Try it if you can't get your windshield clean with just glass cleaner.