TREAT 4-WEEKLY - It’s important to treat your pets year-round to prevent flea and tick infestations. One 3-pack provides your dog with 3 months of protection. EASY APPLICATION - Simply empty one pipette onto your dog's skin at the base of the neck and it will quickly spread over their coat - it's as easy as that. TRIED AND TRUSTED - FRONTLINE's advanced vet-strength formula is highly efficacious and yet has an exemplary safety profile. KILLS FLEA EGGS - Unlike most flea treatments, FRONTLINE Plus not only kills fleas but also stops their eggs from hatching and infesting the home. KILLS FLEAS & TICKS – Fleas are killed within 24 hours and ticks within 48 hours, helping to protect dogs from the discomfort and diseases these parasites cause.