I have a 2000 S70 GLT with the stock, beige dashboard material. Many of my front seat passengers have accidentally rubbed their shoes against this material (near/under the glove box and center console which houses the stereo and climate controls) and left behind 'dirt' which probably consists of shoe polish, grease, and whatever else might have been on the soles of their shoes. I have tried Tuff Stuff (liquid and foam formulas), Amonia free Windex, and soapy water. None of these have worked. If you've had any success in using a specific product, I'd appreciate it if you'd let me in on your secret.

Thanks.

Steve