FRONTLINE Spot On is an effective and easy-to-apply spot on product that, when applied monthly, helps to protect your dog against fleas and ticks. It is for the treatment and prevention of flea and tick infestations, and as part of a treatment strategy for Flea Allergy Dermatitis where this has been previously diagnosed by a veterinary surgeon. FRONTLINE also controls infestations with biting lice on dogs. Each pack contains 1 pipette for dogs weighing between 20kg and 40kg. Contains: 268mg Fipronil.