I’d try a bath as a last resort. You’d need the highest concentration isopropyl alcohol you could find, like 90%+. I’d also recommend removing any plastic parts and disassemble the metal backing. If things are soldered or glued together, I might not chance it, as moisture could stay trapped inside.
Pacific Drive has amazing music. So good that I started following some of the bands behind it. The Smoky Brights are a new favorite of mine.