I use frontline pluse twice a month (1/2 dose each time), because Apple only weighs 4 lbs. a few ounces...It's not systemic, so it's not in their blood stream, it just absorbed by the first few layers of the skin...My friend, w/a yorkie uses comfortis, once a month, and doesn't seemed to be concerned about it being systemic, but I'm neurotic lol...Frontline plus applied twice a month seems to work for Apple, but I suppose if it didn't, I'd probably switch...For now, it's frontline plus.... |