Their cleaners don't have petroleum distillates. Says it's safe for safe for equestrian use: http://www.leatherique.org/preservation_products.htm

 

Here's a before and after on my door panels...I used a Mr. Clean Eraser from the grocery store. The difference was big but I need to take another shot at it to get it perfectly clean.

 

Cool tip! Thanks for sharing.

 

Those erasers are the bomb. FYI I used a steam cleaner and I tell you it takes some time but you get all that junk out of all the areas of the car and it is really clean with no chemicals. Just don't use it on painted items.