Frontline Plus is a monthly spot-on flea and tick treatment for dogs, delivering fipronil and S-methoprene through a single pipette applied to the back of the neck. It kills adult fleas, prevents flea eggs and larvae from maturing, and controls ticks and biting lice — a broad-coverage topical suited to dogs with regular outdoor exposure.

Fipronil handles the immediate parasite kill — adult fleas within 24 hours, paralysis ticks, brown dog ticks, and lice on contact — while S-methoprene breaks the flea life cycle by stopping eggs and larvae from developing. Monthly application covers fleas and brown dog ticks; for paralysis tick areas, fortnightly reapplication is recommended. Water-resistant once dry.

Frontline Plus has been a standard recommendation in Australian vet clinics for decades, and its dual-action formula against both adult and juvenile flea stages is the main reason households with persistent flea problems turn to it. Consistent monthly use is what makes the environmental control effective.