Heartworm is a disease that is transmitted by mosquitoes. It is an issue in our area, and indoor pets are also at risk. Prevention of this condition is easy and inexpensive, especially when you compare it to the expense of trying to treat the disease, the pain it causes your pet, and often the heartbreak of losing your pet.
In cats there is no treatment, and 1-2 worms can result in death. For canines, the treatment involves using a medication that is a form of arsenic. The treatment process itself has risks and is expensive; the exact therapy process and risk is dependant upon your pet's stage of illness.