DUMB QUESTION: how to safely remove mold from a silicon mask skirt?

[FMT]

Once a year I disassemble my mask and use hot water, dish soap, and an old toothbrush to clean it. The toothbrush really works well to get into all the crevices and clean away the nasties. ewwww No sulfuric acid needed.
Hanging up your mask to dry after diving makes a big difference too.
T