All you need to know (and more) here...
http://www.ext.vt.edu/pubs/housing/356-643/356-643.html
Basically it says keep things clean and dry and you won't suffer from it.
I would use dilute household bleach, a scrubbing brush and even an old toothbrush for awkward places - dry it off and leave it outdoors to dry in the breeze.
Peccavi, February 2009