Lime (calcium oxide) is strongly basic (alkaline) and will likely cause
chemical burns if used in such a situation.

It's a LOT different putting it in a litter box compared to putting it
on a dung heap that is a way from animals. Some tissues are more
sensitive to such burns such as eyes, but serious injury could happen
anywhere to a ferret from trying that and it could also lead to a
poisoning situation.

http://www.emedicine.com/derm/topic777.htm
Scroll to "cement burns"
then a bit past halfway down the page go to "Treatment" and "medical
care" as well as "others"

http://en.wikipedia.org/wiki/Chemical_burn

and there is loads more out there.

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/fhc/
http://www.ferretcongress.org/
http://www.trifl.org/index.shtml
http://homepage.mac.com/sukie/sukiesferretlinks.html

[Posted in FML 5995]