Quoted from johnwartjr:Remove any components that could leak, such as relays or dip switches.
Remove socketed ICs
Spray down with citrus cleaner. I use LA's Totally Awesome from the dollar store.
Rinse with hot water. Dry with compressed air. Dry in front of a fan.
Yep that LA's Totally Awesome is a damn good cleaner. Highly recommended.Use it for everything nice to know it can use it for this too.