Yes, I've heard 1 drop & 1 cat tube. When we figured it out by weight, it's .0125cc of 120mg/cc & .05 cc of 60mg/cc. My vet tells me that they all contain the same thing, just differing amounts & concentrations so we order the one for vary large dogs (plum) which contains 360mg or 3ml. We have be dosing this way for several years & it's worked great, no earmites, fleas, etc, w/ no side effects (that I know of). Katie & all the Kids in KC [Posted in FML 7301]