I also found the following:
The following cleaning advice applies only to Coach's canvas fabrics.
*MINOR DIRT SPOTS & MAKE UP*
* Baby wipes are a gentle and easy way to clean your purse.
* A damp paper towel/cloth and handsoap also work
*MODERATE DIRT SPOTS, OIL, DRINKS*
* Shout or a spray on stain remover - wet a toothbrush and spray the stain remover on it. Gently brush the area of the stain and then rinse it out.
* Mr. Clean magic eraser (thank you Cindy!!) - rub mr. clean magic eraser over the dirt mark. Works on oil and drink stains!
* Hair Spray - take a cotton swab and dip it in hairspray bottle. Blot off excess liquid with a paper towel and then rub it over marks. Wet area with water and then blot dry.
*INK MARKS*
* Rubbing alcohol - dip a cotton swab into the rubbing alcohol. Blot off excess liquid with a paper towel and then rub it over marks. Wet area with water and then blot dry.
* Hair Spray - follow the same procedure for the rubbing alcohol.
* Mr. Clean magic eraser
*OVERALL OR EXTREME DIRTINESS*
-The Woolite method-
* Fill up a sink or bucket with lukewarm water and about half a cup of Woolite (can be more or less depending on the size of your purse).
* Soak purse for 4 or 5 minutes and gently rub the canvas with gloved hands.
* For more severe stains brush the fabric gently with a scrubbing brush.
* DO NOT LEAVE PURSE IN WOOLITE SOLUTION FOR MORE THAN 10-12 MINUTES.
* Rinse bag under running water.
* Fill up sink/bucket with clean water and soak bag in for 4 minutes. Repeat step if desired.
* Squeeze out excess water. Fill bag with towels and lay out to dry.
For Leather:
*MINOR DIRT SPOTS AND MAKEUP*
* Baby wipes are a gentle and easy way to clean your purse.
* A damp paper towel/cloth and handsoap also work
*MODERATE TO SEVERE DIRT & STAINS*
* Apple Leather CONDITIONER. Available on LeatherStuff.com or Burlington Warehouse. The conditioner cleans leather well and is gentler on your purses than the cleaner. To use first shake the bottle. Then dispense a small amount on a cloth. Gently rub the dirty area with the cloth. Then buff dry.
*
* Mr. Clean Magic Eraser. Available for purchase at most stores. Gently rub the area of the staining with the eraser. The area may be dry afterwards so make sure to moisturize with Apple Leather conditioner aftewards.
*INK STAINS*
* Rubbing alcohol method: Buy a bottle of rubbing alcohol and dip a cotton swab into it. Blot off excess alcohol and gently rub over the mark. Then take a paper towel dampened with water and wipe off the area. Blot dry.
* Hairspray method: Dip a cotton swab in hairspray and blot off the excess. Rub gently over the pen mark to take it out. Then take a moist paper cloth and wipe off the area. Blot dry.
The following cleaning advice applies only to Nylon.
*MINOR DIRT SPOTS & MAKE UP*
* Baby wipes are a gentle and easy way to clean your purse.
* A damp paper towel/cloth and handsoap also work
*MODERATE DIRT SPOTS, OIL, DRINKS*
* Shout or a spray on stain remover - wet a toothbrush and spray the stain remover on it. Gently brush the area of the stain and then rinse it out.
* Mr. Clean magic eraser (thank you Cindy!!) - rub mr. clean magic eraser over the dirt mark. Works on oil and drink stains!
Sites:
http://www.fashionaccessoryforum.com/coach/862-unofficial-how-clean-your-coach-guide.html
http://forum.purseblog.com/coach/how-to-clean-your-coach-37590.html