How do you keep your bags clean, particularly the insides? I recently bought three very lovely new ones (a Kooba with a light purple lining, an Isabella Fiore with a white lining, and a Hayden-Harnett which is black inside, thank goodness) and am afraid that I'm going to trash them in no time flat! I had a beautiful $950.00 Marc Jacobs bag which got beaten to death in no time. The light suede inside is full of pen marks and just looks grimey. Kinda makes you not want to reach inside... Anyway, I ordered some Shining Monkey, having seen a thread on this site extolling its virtues. However, any other advice you can give me would be SO appreciated. Thanks!