I use polycarbonate chocolate molds.( or what you call professional
molds).
..If I use it continuously I just have to wipe off the ' chocolate
'dirt and reuse it.

If it gets really dirty that wiping will not remove the dirt I have to
soak it in very hot water and let the dirt soften and then wash it
slightly soapy water.
Then rinse it again with very hot water, let it drip dry.
Then wipe it with clean cloth and put in the mold warmer for later use.

I occasionally wash it in the dishwasher but don't use much soap.