I think it is funny that some people don’t give prevention because it is so toxic, but they say they would treat their dog if it came up positive because that isn’t as toxic. Treatment is way harder on a dog than prevention. One method uses arsenic and the vet is literally balancing how much to give to poison the worms but not kill the dog. The other method uses exactly the same thing as heartworm prevention in either the same dose or a higher one. I use heartworm prevention for my dogs, but if I decided not to, I would not treat a positive dog, since if I’m doing all the things to keep mosquitos off of him anyways, he could never have more than just a very few worms, which would never cause an issue.
I don’t think a monthly dose of Sentinel is much different in toxicity than Ivermectin, it does have something for fleas in it too, but my understanding is that it is one of the less noxious ones. It’s definitely better than Trifexis.
