Dear Stephanie:
 
>My question is for Dr. Williams, or for another vet or medically inclined
>person.  Is pennyroyal safe to use on a ferret as a flea and mite avoidance
>measure?  A friend of mine uses it on her cats and dogs, but I wanted to
>check before I decided to use on the fuzzbutt.
 
Pennyroyal oil is pretty safe, although it's efficacy is questionable.
Several years ago, there was a report on fatal intoxication in a dog, but
I haven't seen anything since.
 
Unfortunately, I can't give you a dose for it in a ferret.
 
With kindest regards,
Bruce Williams, dVM
[Posted in FML issue 3260]