Just wondering how effective they are and what the intended purposes are? My problem is, I'm a rain magnet. We have had no rain in a couple of weeks with bright sunny beautiful days so I decided to wash the Bullitt Sunday. Less than 2 hours later it gets dark and rains. This happens everytime I wash a vehicle. My car looks better now even after the rain than it did before I washed it, so will the detailing spray work to get rid of the dirty water spots, or do I need to re wash it and hope it doesn't rain again? It doesn't look that bad, there's not many water spots to my surprise, but I can see the dirt in the water spots.