How to effectively clean straw Coach bags?

  1. Hi girls! wasn't able to assist me with this query, so I'm hoping the fanatics in this forum will be able to help me out! I bought a straw Coach bag (chelsea, I believe) from Nordstrom last year and generally only use it for summer, for which it is perfect.

    Recently I took a trip to Vietnam and brought the bag with me since it's scorching hot/humid over there. Fun trip, but Vietnam has REALLY bad pollution and unfortunately my bag suffered for it. It's light gray all over, with some areas more black than others. Anybody know any effective ways to clean it? Any help would be appreciated!

    Here's a picture of the bag in case that helps:

  2. *BUMP* Anyone? :confused1: