Dr. Williams asked if anyone was using oral flee control for fuzzies. We are not, but we use a different (I think) medication for our cats and dog than the one he mentioned. We use Proban(cythioate). If I remember correctly it makes the pet's blood toxic to the flee (and possably other biting insects). It does not prevent bites, or protect from other effects of the bite. We do find that any flees that get to our fuzzies are either dead, or not very active. We also do not seem to need to bathe/spray/bomb as often (which reduces the risk of toxic reactions). The cats and dog also have flee collars. We have not asked about using Proban on the fuzzies, but I don't think it would be advisable. The dosage is administered twice weekly: For the 30mg tablet: 3.3 mg/kg (1 tab for 9 kg) For the liquid (1.6%) 1 ml/4.5kg With ferrets ranging from .5 to 1.5 kg the dose would be a few drops, or a few crumbs. The error rate in dosage could be significant, and dangerous. I also wonder if this would be of any benefit to ferrets that are kept in doors. This product is not a complete solution, but it is an effective and economical aid when there are cats or dogs that might bring flees inside. Richard Margaret, Smokey, Pixie, Boots, and Ping. [Posted in FML issue 1170]