Iverhart plus pork liver flavored chewable tablets are prescription-only medications. The drug has Ivermectin and Pyrantel Pamoate as the chief ingredients in its formulations. It acts as a dewormer for dogs and can effectively kill internal parasitic worms like roundworm, hookworm, heartworm, and other harmful parasitic organisms. You may need the administration of additional medication that can help you kill external parasites like ticks, fleas, or mites. You can also get in touch with your pet’s veterinarian when you observe an infestation beyond leaps and bounds and has spread both internally and externally on your pet. These circumstances warrant the need for pest control solutions that can handle such conditions. You being vigilant and checking your pet regularly for any foreign or unwanted organisms can help you identify pest infestations at a very early stage. This in turn can help you to administer the right pest infestation control mechanisms and medication before the widespread impact of the pest occurs.