You're right to be wary - steam cleaning can be a bit risky.. Gunk and
(several) washing-up brushes (the ones with the long handle) have worked
pretty well in the past, but - if you want it /really/ clean, then you may
well end up having it /professionally/ steam cleaned. "Professional" as in
all the electronics being covered/removed, then cleaned by hand. Expensive..
Hairy One Kenobi
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