For anyone who buys the large dog tubes of Advantage and splits it among the cats: Do you have to use a whole tube once you open it? Can "leftovers" be saved for the next month? And if you use most of a tube and have a little left, how do you dispose of it? Is it safe to just throw it in the trash?
I'm thinking of doing this to save money, but I'm not sure what size would be best to get (for two medium sized dogs and two small cats).
I'm thinking of doing this to save money, but I'm not sure what size would be best to get (for two medium sized dogs and two small cats).





