wrote in message
oups.com...

Your local hardware store should have something to specifically remove
bathtub silicone.
It was invented about 20 yrs. ago.

Good luck with that!

The best I have found is a mechanical, if you wish, but specifically scotchbrite
pad with an abrasive, like valve lapping compound, or comet cleanser, or rubbing
compound.

Silicone caulk was invented partially for its high resistance to chemicals.
--
Jim in NC