Bleach should work. The worked on my rub rails, although not perfectly.

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"j" ganz @@
www.sailnow.com

"SAIL LOCO" wrote in message
...
Try water with plenty of bleach mixed in. If that doesn't work throw them
away. That rubbery plastic stuff is crap. I just tossed a winch handle
holder
and a handheld VHF holder away. Not worth messing with. Just bought new
ones.
S/V Express 30 "Ringmaster"
"No shirt, no skirt, full service"