OK, so I went and bought some, and I am not impressed. The other day I'm driving down the highway at night in the fine, misty rain, and of course I had to use my wipers, and the stuff just smeared like crazy, and with the oncoming headlights in my face, I could hardly see anything. I called DG and they said they have had some problems with this product smearing in a misty rain, but if it were raining harder, it would have made a difference. But there are always times when you need to use the wipers, so this is not practical. Since I was trying to find an alternative to Rain-X, which smeared for me, I didn't like this product. I am now going to remove the stuff with Nu Glass, and NEVER, EVER put anything on my windshield again. I have read that a good, clean windshield will naturally repel the rain, so I am all for getting my windshield as clean as possible (if I can get the stuff off) and leaving it that way! I will still use Rain-X on my side and back glass, but not this stuff.