03-26-2015, 02:31 PM
I've always used Scrubbing Bubbles Mega Shower Foamer. Just put them in the laundry tub. Spray very well. Come back in 15 minutes and rinse in hot water. No fuss. Super clean. Here is a pic from the 37-116 I'm working on. I didn't even pre-clean them, they were super dirty. I'm going to give them a quick coat of gloss lacquer.
Tony
Tony