Fast-acting protection against fleas. Vectra is a monthly topical flea control product that provides long-lasting protection against all stages of fleas. Applying it once a month all through the year provides relief from flea infestation and protection from disease transmission to your kitten or cat. * Kills fleas within 6 hours. * Kills on contact; fleas do not have to bite to die. * Protects against flea-borne diseases including tularemia, rickettsiosis, bartonellosis and tapeworm. * Protects cats from all stages of fleas: eggs, larvae, pupae and adults. * One application protects your cat for 1 month. * Insect growth regulator remains effective after exposure to sunlight. * Safe for kittens as young as 8 weeks of age. Ask your veterinarian about Vectra for your cat or kitten.