I read your earlier post about you using the griots glass polish, I have also ordered from griots & am happy with their products, however can you tell me your experience with the glass polish? I also have mineral spots that are hard to get off but my concern is that will this product cause wiper chatter later after applying it to the windsheild? I use Rainx on all the other windows except the front cause I hate wiper chatter, I do use bon aime to clean my windsheild regularly but still have the spots. Also how often do you use this polish? Thanks for replying.