Animals can easily acquire intestinal parasites from a simple stroll outdoors, where inadvertent ingestion of microscopic parasite eggs from the ground can occur. Even animals strictly confined to the indoors may be exposed to internal parasites simply by ingestion of insects or rodents, or by ingestion of parasite eggs that humans or other animals have accidentally tracked inside. To lessen parasite challenge to pets as well as human family members, we advise an annual fecal examination and monthly preventative year-round. No single dewormer or preventative exists that controls all parasites, but certain products administered once a month can play a crucial role in this control. We can provide the best monthly intestinal parasite control product that best meets the individual needs of your pet.