Advantage II Large Cat Flea Treatment | Over 9 lbs | 6-Month

Complete flea protection for larger cats. Advantage II Large Cat Flea Treatment provides comprehensive, vet-recommended flea control for cats over 9 lbs — killing fleas, flea larvae, and flea eggs to break the flea lifecycle completely and eliminate infestations rather than simply treating individual animals.

Advantage II's dual-action formula uses Imidacloprid to kill adult fleas on contact within 12 hours, and Pyriproxyfen to kill flea larvae and prevent eggs from hatching — breaking the lifecycle at every stage simultaneously. The monthly topical treatment is easy to apply at the base of the neck where your cat cannot lick it off. Waterproof after 24 hours. Safe for use in homes with both cats and dogs. A single treatment per cat provides 30 days of continuous flea protection — six applications protect your large cat for a full 6 months.

Active Ingredients: Imidacloprid + Pyriproxyfen  |  Cat Size: Over 9 lbs
Supply: 6-Month (6 doses)  |  Application: Monthly topical

Frequently Asked Questions

Is Advantage II safe for cats over 9 lbs?

Yes — the Large Cat formula is specifically dosed for cats over 9 lbs. Always use the formula sized for your cat's weight — never apply dog products to cats.

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.