What will pilfer stains out of fiberglass and plastic sinks and tubs? ...
Answers: soft scrub the cream stuff works well next to a toothbrush if there are any design indentions...also thieve some baking soda and add wet till it is a paste...put it on and start out it...for an hour or so ...do it again...but i personally similar to the soft scrub hasnt been a stain on the other hand it hasnt gotten out
Try easy rotten oven cleaner. It's pretty caustic stuff but it cleaned my fiberglass tub and shower to a shining topical finish.