We use "OTI-CLENS" for ear cleaning.  I'm pretty sure you can only get it from
your vet.
 
In my highly unprofessional opinion, I think using a q-tip may just push the
gunk further into the ear but I have yet to ask my vet if using oti-clens in
the way described on the bottle is ok for ferrets... though I don't see why
it wouldn't be.
 
Directions state filling the ear canal, massage a bit and let 'em loose.
They'll shake their head a lot and the gunk will be expelled with the
oti-clens.  We do it this way with our cat.
 
  mike
 
[Posted in FML issue 0761]