Well - I normally do not promote specific products but I found a product that I just had to share. SHURHOLD MOLDAWAY was the easiest clean-up I've ever done and it left my interior as good as the day it was delivered to us.
Just look at these pictures and see for yourself. It comes in a granular that you mix with water. Spray or wipe on, very little rubbing needed, then rinse away and dry to a sparkling shine. I always follow up with an interior protector to keep future dirt and dust from penetrating.
This product will be well worth the $15.00 cost and it
goes a long ways. Also be sure to order your interior
protector to be sure your shiny interior stays spic-n-span.