Thanks Dori. I agree that the HW treatment is much worse than the prevention. That’s scary though, about Heartguard not releasing the inactive ingredients. Sounds like it might be six of one, half a dozen of the other when it comes to choosing preventatives. There will always be advantages and disadvantages. I guess I might as well go ahead with the Sentinel Spectrum, at least they’re honest about the ingredients. I know some people use garlic, but that is also controversial and potentially risky.
