Quickly kills fleas within 24 hours of initial application. Prevents tick infestations within 48 hours after application. Kills and repels reinfesting ticks in as quickly as 6 hours.Kills and repels fleas and ticks for 8 continuous months in one easy-to-use, non-greasy, odorless collar. The Seresto collar is water-resistant* and remains effective following a shampoo treatment, swimming or after exposure to rain or sunlight.
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