OER floor mats
 

I just got a set of floor mats, light blue, from Classic Parts. They're OER brand. They have a whiteish residue on them and I've scrubbed them with Mr Clean and it doesn't take it off. Is there something I can put on them to clean the residue off such as pre paint cleaner or what ever?

Re: OER floor mats
 

Are they rubber floor mats?

Simple green with a little borax mixed in or Goo Gone and then possibly Bleach White tire cleaner. Try it on the back side first and always start with the lightest cleaner and move up.