Using a soft toothbrush but still not doing the trick, the toothbrush is leaving small scratch marks too , luckily you can't see them unless you look close. what do you do to keep them clean? I have UW too, Don't want to remove them,not worth the stone chips, but becoming a pain that edge of the plastic collects a lot of dirt and debris.

 

Have you tried a cotton swab? Or microfiber might work well. I think the toothbrush might just move the dirt around versus really pick it up. What type of cleaner are you using?

 

Haven't tried that, Just hot water and soap, waxed the whole car today