I’m using advantix multi for heartworms, but it simply does not work here on fleas. A bit better on ticks, but not completely reliable. I’ve been supplementing after two weeks with Comfortis, but would like to add tick protection.
What would work best and safest with the Advantix Multi? We now have Ivermectin resistant heartworms, thanks to Hurricanes Katrina and Isaac, per my vet. The vets here don’t offer a lot of heartworm choice, and what they do have is godawful expensive. No off patent versions of anything at all, and non-ivermectin class heartworm preventatives have to be ordered.