Product review (3 stars): Works Ok however, it did not do much to ...
Works Ok however, it did not do much to prevent the growth of a bit of black mold in the water basin
(there wasn't very much of it so I didn't get concerned).

I set it outside in the sun to dry out and get lots of UV which I guess will probably kill it off.
 There did NOT appear to be any mold on the filter itself however so perhaps it does have some anti-mold properties.