Effective against fipronil-resistant strains of fleasCan be used in breeding, pregnant and lactating dogsKills pre-existing and new infestations of paralysis ticks (Ixodes holocyclus) for 6 monthsProvides effective control of fleas on dogs within 8 hours of administration, and subsequently maintains persistent efficacy against flea re-infestations for 6 months following applicationThe flea life cycle can be broken by the rapid onset of action and the long-lasting efficacy against adult fleas on the dogNewly emerged adult fleas on a dog are killed before viable eggs are producedEffectively controls environmental flea population in areas to which the dog has access