Yes I've tried it twice, and by gosh it does help!  It truly does.  It
takes time though,,,a few days to get in their system I suppose.  I do
not use it regularly for two reasons:
 
1) if you have more than a couple of ferrets it sure can begin to cost a
   lot to keep it up
 
2) I was uneasy about giving something internally to my ferrets over
   extended long periods of time
 
I use it when I go out of town so the odor is easier for guests to take
care of.
 
Wolfy
 
Please visit:
http://www.geocities.com/wolfysluv/
for information on ferret deafness:
http://www.geocities.com/wolfysluv/deaf.html
[Posted in FML issue 3797]