Advantage II Extra Large Dog Flea Treatment | Over 55 lbs | 6-Month

Maximum flea protection for your biggest family member. Advantage II Extra Large Dog Flea Treatment is the vet-recommended topical flea treatment that kills fleas, flea larvae, and flea eggs to break the flea life cycle completely — formulated for dogs over 55 lbs with the appropriate active concentration for large breeds.

Advantage II uses Imidacloprid and Pyriproxyfen — a two-action formula that kills adult fleas through contact (no biting required), kills flea larvae, and prevents flea eggs from hatching. This multi-stage attack breaks the flea lifecycle at every point, ensuring that flea infestations are eliminated rather than merely managed. The easy-to-apply topical formula requires a single monthly application that begins working within 12 hours and remains effective for the full 30-day protection period. Waterproof after 24 hours — your dog can swim, bathe, or get wet without losing protection.

Active Ingredients: Imidacloprid + Pyriproxyfen  |  Dog Size: Over 55 lbs
Supply: 6-Month (6 doses)  |  Application: Monthly topical

Frequently Asked Questions

Does Advantage II kill ticks?

Advantage II kills fleas but is not labeled for tick control. For tick prevention alongside flea treatment, consider K9 Advantix II, which adds tick repellency to the formula.

Is this 100% authentic?

Yes — all Hamxi products are 100% authentic, sourced from authorized distributors.

✔ 100% Authentic  |  ✔ Free Shipping on $50+  |  ✔ 30-Day Hassle-Free Returns

- No EU import duties.
- Ships within 1-2 business days.
- Ships in our fully recyclable and biodegradable signature boxes.

Regularcare. Use a slightly damp, soft and lint-free cloth for regular dust removal. Always clean in the direction of the grain.