Fipnil Plus Spot-on Solution for Medium Dogs is an effective method of controlling flea infestations, alone or in association with ticks and/or biting lice on dogs weighing 20 - 40kg. Supplied in easy-to-use pipettes, a single dose of Fipnil Plus will kill fleas within 24 hours, and ticks and lice within 48 hours. It has a persistent insecticidal efficacy against new infestations of fleas for up to 8 weeks, and a persistent acaricidal efficacy for up to 4 weeks against ticks. Active ingredient: Fipronil and S-Methoprene. Protects your dog and cat for 4 weeks. Shelf life: 2 years. Storage Instructions: Do not store above 30°C. Store in the original package.