Advantage Flea Treatment for Large Cats over 9 lbs — 4-Month Supply, Kills Fleas & Eggs

Advantage II Large Cat is a monthly spot-on flea treatment that kills adult fleas, larvae, and eggs to protect cats over 9 lbs for 30 days per dose.

Designed for cats at least 8 weeks old and weighing more than 9 pounds, this vet-recommended topical delivers fast, month-long control of fleas through contact action — fleas die without needing to bite your pet. Each package contains four pre-measured applicator tubes for four months of protection; the formula is fragrance-free and becomes water-resistant after 24 hours. Regular, on-schedule use helps interrupt the flea life cycle so infestations are controlled with minimal environmental measures.

How quickly does it work and how long does protection last?

Advantage II begins killing fleas within minutes and eliminates the majority of adult fleas within 12 hours; it continues working for a full 30 days after each application. The product also targets flea eggs and larvae to reduce re-infestation over time.

• Kills adult fleas through contact — no biting required.
• Destroys flea larvae and eggs to break the life cycle.
• One tube protects for 30 days; package includes four monthly doses.
• New fleas encountered are typically killed within two hours.

How do I apply Advantage II and is it easy to use?

Application is a simple spot-on method: part the fur at the base of the skull and squeeze the applicator tube directly onto the skin so the entire dose is absorbed. The process takes seconds, avoids pills or collars, and is suitable for routine monthly use.

• Apply to skin at the back of the neck at the base of the skull.
• Use one full tube per month; do not split doses between animals.
• Wash hands thoroughly after handling; avoid contact with eyes or mouth.
• Water-resistant after 24 hours — bathing immediately after application is not recommended.

Is Advantage II safe for my cat and are there precautions?

When used as directed, the product is formulated for cats 8 weeks and older and weighing at least 9 pounds. While most pets tolerate it well, individual sensitivities can occur; consult your veterinarian for debilitated, pregnant, nursing, or medicated animals.

• Not for kittens under 8 weeks or animals under 9 lbs.
• Avoid contact with eyes and mouth; harmful if swallowed by humans.
• If irritation or unusual signs occur, stop use and contact a vet immediately.
• Follow first-aid instructions on the label for accidental exposure.

Will I need to treat my home if I use Advantage II on my cat?

Because Advantage II rapidly kills adult fleas and interrupts egg and larval development, many pet owners find environmental treatment is not required when the monthly program is followed consistently. In heavy infestations or multi-pet homes, additional environmental or household treatments can speed recovery.

• Regular monthly use typically breaks the flea reproductive cycle.
• Severe infestations may benefit from home cleaning or vacuuming.
• Consult your veterinarian for multi-pet treatment plans.
• Environmental sprays or treatments can be used when recommended by a pro.

Who is this for: Advantage II Large Cat is intended for cat owners seeking a convenient, vet-recommended monthly spot-on flea solution for single or multiple indoor/outdoor cats over 9 pounds. It's a practical choice for people who prefer a topical application over pills or collars, want fast-acting control, and wish to reduce the need for extensive home treatments when keeping up with a monthly schedule. Always review label directions and discuss use with your veterinarian for pets with special health considerations.

Ingredients

Imidacloprid (9.1%), Inert ingredients (90.9%)