ANSWERS: 1
-
Heartgard kills heartworm larvae (Dirofilaria immitis) before they can grow into adults. Heartgard Plus kills heartworm larvae and adult hookworms (Ancylostoma caninum, Uncinaria stenocephala, Ancylostoma braziliense) and roundworms (Toxocara canis, Toxascaris leonina).
Source:
Copyright 2023, Wired Ivy, LLC