Hormonal replacement creams and some anti-aging creams have been mentioned before. So have products with lavender or tea tree oil since both are estrogenic though the potential risks are not as great for these. Now, there is at least one type of skin cancer cream for which such warnings are out: http://news.yahoo.com/s/nm/20101102/hl_nm/us_cancer_pets Remember that ferrets are descended from the dog branch of carnivora and a number of things that are poisonous to dogs are also poisonous to ferrets. In part: >"5-fluorouracil cream is extremely toxic to dogs, for unknown >reasons," said Dr. Nicholas Snavely, a dermatologist at the University >of Virginia, Charlottesville, and a co-author of the report on the >case. "Very small doses will send them into seizures and they die-and >people don't know about this." Sukie (not a vet) Recommended ferret health links: http://pets.groups.yahoo.com/group/ferrethealth/ http://ferrethealth.org/archive/ http://www.afip.org/ferrets/index.html http://www.miamiferret.org/ http://www.ferrethealth.msu.edu/ http://www.ferretcongress.org/ http://www.trifl.org/index.shtml http://homepage.mac.com/sukie/sukiesferretlinks.html all ferret topics: http://listserv.ferretmailinglist.org/archives/ferret-search.html "All hail the procrastinators for they shall rule the world tomorrow." (2010, Steve Crandall) On change for its own sake: "You can go really fast if you just jump off the cliff." (2010, Steve Crandall) [Posted in FML 6870]