K9 Advantix II Small Dog treats and prevents lice, fleas, ticks, mosquitoes, biting flies, and flea eggs for 30 days. Within 12 hours of application, eradicates fleas. Formula recommended by a veterinarian repels and kills fleas on contact, so they don't have to bite your dog to die. After 24 hours, this topical treatment is fragrance-free and waterproof. No need for a prescription
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