Should have listened to all the reviews up here... It's so surprising that even after the whole process, there are still dirty spots here and there, even a layer of dirt over my back seat door. Are the towels they use on my car dirty??? And what I hate the most, is that my windshield has all those marks left from wiping chemicals on it, see attached picture. And they can't be wiped off using tissue papers and stuff! I have to get something from Walmart to get those off