The term "heartworm preventative" is confusing. The "preventative" prevents adult heartworms by killing any existing young baby heartworms. If a dog gets baby heartworms from a mosquito bite and a "preventative" is given within a month, those baby heartworms are killed....
Posted to
Illnesses, Diseases & Conditions
(Forum)
by
janet_rose
on
08-23-2007
Filed under: heartworms, ticks, ivermectin, selamectin, fleas, Revolution, sarcoptic mange, Interceptor, ear mites, Heartgard Plus