To Urban: A mould spot onthe wall probably doesn't bode much harm for your ferrets. If it gets close to within their reach, I would clean it with a dilute bleach solution, but other than that they probably don't require evacuation. There are some allergies in the animal kingdom to various molds, but ferrets have never been documented as having one. Bruce Williams, DVM Department of Veterinary Pathology [log in to unmask] Armed Forces Institute of Pathology (202) 782-2600/2602 Washington, D.C. 20306-6000 [Posted in FML issue 0975]