This means it is imperative that my dog is kept on monthly heartworm prevention year round. (tampabayvets.net)
Some require a set of 3 injections a month apart and some are okay with just the 2 treatments (24 hours apart), followed up with monthly heartworm prevention. (canineexpress.org)
Ask your veterinarian if they recommend monthly heartworm prevention for your cat. (uvhdc.com)