W.T.
Well if was water it would have defiantly gone away without leaving any marks but as it was milk it was to leave some marks... But no need to worry over them its really as easy as getting your car to a car wash, an new type of car wash that is. My kids are messy eaters and leave all sort of stains on the back seat, what I do is that once a moth or when need be I send my car for a professional steam cleaning http://www.detailxperts.net/services_locations_mobile_det... service to DetailXperts, check out there website they might have a franchise in your area. (steam cleaning is just like a car wash but uses steam instead of water, so less wastage of water + more efficient + kills germs brewing in the spills!)