Pet Armour is similar to Frontline if I understand correctly. I have never had luck with using Frontline in my area. I do use Advantix and I never have flea issues. However, since you just put the Pet Armour on a week ago I don't think I would put the Advantix on right now. You might want to call the vet and ask about this. Some dogs do have reactions so it is better to be safe. |