About This

• Trusted for 15 years, Vectra 3D Extra Large Dog Monthly Treatment & Prevention protects dogs over 95 lbs. and 8 weeks of age or older from fleas, ticks, mosquitoes, lice, mites (excluding mange mites), and biting and sand flies
• Begins reducing flea feeding (bites) in 5 minutes. Kills fleas in 4 hours.
• Repels and kills fleas, ticks and mosquitoes, no bite required
• Easy-to-apply topical treatment that is quick drying, fragrance-free, non-greasy and waterproof after 24 hours
• No prescription required