I'm just wondering if any of you have had any experience using Comfortis flea control pills for your pets. I use it, and think it works great. One of my dogs is very sensitive to the topical stuff, such as Frontline. It irritates her skin and drives her wild for a day or so. So, Comfortis has been great for us. Somebody was saying that Comfortis makes their dog vomit, but that's not a problem with my dogs.