My wife used magic eraser and off bug spray... And for the hard to get spots she used clean magic eraser with a few squirts of Grease lighting... And for the headlight lens to be on a 97 Saturn they look amazing and the best part... The dull yellow cloudy haze is gone now!!

 

A simple paste of baking soda and water works pretty well too. You put it on a damp rag and really have to scrub with some elbow grease.