Hello everybody! I bought the AutoGlym Leather care cream and Leather cleaner from Halfords a few months back and used it 3/4 months ago butit didnt seem to take most of the stains off! Why's that? Im thinking of doing it again but ive heard its not good to keep doing it, is that true? Are these products good? How do I go about removing the stains and how often do I need to do it? Thanks!!