Advantage II Small Dog Vet-Recommended Flea Treatment & Prevention | Dogs 3-10 lbs.Deliver total flea protection to your dog or puppy with Advantage II Small Dog. This vet recommended, topical treatment and prevention formula kills adult fleas, flea larvae, and flea eggs on contact within 12 hours of application meaning fleas can be eliminated before they bite or lay new eggs. Effectively break the flea life cycle, control existing flea and lice infestations, and prevent further infestations with one simple application. Advantage II