Yes! Always have! One Vet said all year around the other said only March through October! So we have been giving heartguard plus the first of the month (March through Oct)
@Lily122511 Nope! We have no had any issues with it. Tonka doesn't even notice it--it's simply a little greasy spot between his shoulder blades for a few days. He does, however, notice the ointments mommy puts on his face to heal the areas he has itched though...always tries to wipe them off!! ARRRGGH!