Does anyone know anything about the flea medication Confortis? It's taken orally on a monthly basis. We stopped using Advanatage and Frontline b/c our dog was throwing up after we put it on his skin. He seems to do a lot better with Confortis and there's no chemical on his fur (which is great since we have two small children). I still worry about putting chemicals in his body but we tried holostic ways to avoid fleas and none of them worked.