Hi everyone, its Kathy from Petco again and I just had to write in regarding using Bio-Spot on ferrets or on any animal for that matter. We carry Bio-Spot in my store also but I personally will not recommend it to anyone for any animal and neither will several of my co-workers. I personally have seen horrible side-effects from use of that product in cats and when I questioned my vet about it, he said his practice never backs using that product in any animal. Although I'm sure there are alot of people using Bio-spot without problems, I personally don't think it worth the risk when there are other flea & ticks products proven safer for use on ferrets. Try and enjoy the sunshine! Kathy and the fuzzy and not so fuzzy family. [Posted in FML issue 4197]