I give him heart guard once a month, and I feed him Kasco Puppy right now, but what about the pasty white crap, do I have to give him something like that? The vet gave him that every four weeks, when I had him in for his shots and boosters, but after he got his rabies shot, he said give him heart guard once a month, but I didn't know if that replaces the pastey stuff in the seringe, does it? if not, what is some good stuff for that?