Since we help poisenskyvy with her bird doo-doo problem I was coming on to ask what you guy/gals use to clean your glass on the car. I found 2 products, one is DP High Performance Glass Restorer for 20 bucks and the other Diamondite® Glass Cleaning System Kit for 30 bucks on sale. My goal here is to get rid of the what I guess you call them "water spots" & markings (grease marks) on the glass, (specially front wind shield) that the car glass cleaners I am using is not removing (not even windex). I even tried "an old FHP trick" which was to poor a can of coca-cola to remove bugs and guts, that did not do it. I have these "water spots" or "mineral deposits" on just about all my vehicles from rain and just plain water--What are you guys using to "really clean & restore" your glass, and get rid of these "spots"& marks" that are starting to reeeaaallly annoy me--I'm getting ready to try this DP stuff-- What yawl think?