I had really bad water spots on all the Windows of my car for awhile now. I've tried everything listed in the forum to get em off, just short of the ole brillow pad. Yesterday I finnaly found something that works perfectly. Mr. Clean Magic Eraser. It's a white sponge thing you heat up with warm water, squeeze the water out and put some elbow greese on it, gets all the spots out. If you have a water spot problem, I sugest you check it out.