Advantage II Large Dog Vet-Recommended Flea Treatment & Prevention Dogs 21-55 lbs. 4-Month Supply

Vet recommended flea treatment and prevention for dogs at weighing 21 to 55 lbs., at least 7 weeks of age, Kills adult fleas, flea larvae and flea eggs for total flea prevention and treatment, Same-day effectiveness, kills fleas within 12 hours of application and keeps working for 30 days, Easy-to-apply topical treatment, no prescription needed, Fragrance-free formula, waterproof after 24 hours