Many years ago was between 'real' jobs and briefly a contract cleaner at a place that made computer parts. Shocked to see someone washing dusty returned items so they could be refurbished. Yes, in a sink with water! He explained that as long as they are thoroughly dry before being powered up that clean water does no harm to most electronics. Salt water is a different story...
Occasionally will wash my keyboard when it gets too gross to look at. Overnight standing on end followed by a few hours in the sun is
enough.
Remember, moderation in all things, except, perhaps, dietary diversity!
-- James A. Duke