Twelve of the 16 paws use Comfortis for fleas - we're in the Soouth, too. Gracie, however, cannot have Comfotis because of her seizure history. She takes a regimen of Capstar instead. We, too, were told that Frontline doesn't work that well any more. Fleas are tough! Donna, drool fueler for Elmo, Pw Pauline, Gracie and Pw Bosley, missing Dudley ATB