On boots, I have used a thorough spray of alcohol, followed by spraying with water and wiping. I also use a medium-grade sandpaper on the edges--areas that would naturally be exposed to abrasion. I would NOT take a piece of sandpaper to the main areas as the result is unpredictable and will likely look just like the result of sandpaper rather than wear and tear. Good luck.
12/14/10 at 5:06pm