I am inquiring about what Dr. Jerry Murray, DVM.,from the FHL, stated about the topic;- "Fleas, Ticks, & Heartworms". I only am concerned what dosage He said for ~Advantage~for cats, on Ferrets. The dosage that I was instructed to use was 1 or 2 drops per ferret, as per size, of the under 9lb. feline rx. Dr. `J.M.`, stated a whole tube per ferret. I have the `Advantage` 0.8ml. size tubes. Could someone tell me the correct dosage? This is a chemical, and I wouldn`t want to harm my Fuzzies with too much, or under-protect w/too little! Thank You. John R. & Co. [log in to unmask] [Posted in FML issue 4610]