Hello, I'm a Registered Veterinary Technician and have read this aritcle and several articles like it. What one particular distrabution company is doing is taking legit packages of advantage and frontline and filling the used tubes with medication made for foreign countries or, even worse, with a totally different product all together, such as OTC meds like Hartz (shudders)! The makers of Advantage and Frontline, Bayer and Merial, will ONLY sell their products to veterinarians. They will also honor their guarentee if you buy their product through a veterinarian. The makers will pay for any vet bills if your pets get sick. If you buy the products through a distributor like a pet store, or online, they will not. Those products are accquired illegally. Please only buy your products through your vet. Most vets if you find it cheaper will match the price. They counterfit products are so cheap because most are from overseas. Distributors will buy them illegally from other countries and repackage, or just sell them with the foreign languages! So please, don't buy from online retailers or pet stores. Our fuzzies deserve the very best! Dooks, Jamie M. R.V.T. Mom to Tazz-the big boy, Mica-the little princess, Lilah-demon eyes [Posted in FML issue 4477]