Re: Not sure...
In my experience, electronics don't have an issue being washed provided they are properly rinsed and thoroughly dried before applying power again (having no power includes removal of any batteries, including tiny RTC ones!). Proper drying generally requires a *complete* dis-assembly, too, which might not be worth the time required.
The problem with the article's wet mouse was most likely that there was still water in it when it was plugged back in, which is never good!
Biting the hand that feeds IT
