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Vectra for Cats

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Product Overview

How To Use

What’s in it?


Questions & Answers

Product Description

Vectra for Cats is a once-monthly topical spot-on treatment for cats. It works to kill fleas, including pupae, larvae, eggs, and adults. This non-greasy and fast-drying formula starts killing fleas within 6 hours of application, providing one month of protection.
This product comes in a 3-dose, 3-month supply, or a 6-dose, 6-month supply, based on the weight of your cat (2 to 9 pounds or 9 pounds and up).

Who is Vectra for Cats for?

For use in cats (8 weeks old and up; 2 pounds or greater).

Why use Vectra for Cats?

Features of Vectra:
  • Convenient and easy topical spot-on application
  • Non-greasy and fast-drying
  • Patented applicator allows for easier application, minimizing the odds of skin abrasions
  • Works to kill fleas that can cause anemia, flea allergy dermatitis, tularemia, tapeworm, bartonellosis, and more
  • Kills fleas in just 6 hours
  • Useful once-monthly solution for controlling flea pupae, larvae, eggs, and adult fleas

How does Vectra for Cats work?

This formula contains active ingredients of pyriproxyfen (3%) and dinotefuran (22%), which begin working within 6 hours to kill fleas.



Active ingredient(s):

Dinotefuran 22.00%
Pyriproxyfen 3.00%

How is Vectra for Cats sold?

3 or 6 month supply based on pet weight. 2-9 lbs or 9lbs and above.

What are the side effects of Vectra for Cats?

Minor, short-term application site redness or other sensitivities can occur with use of this or any other pesticide. If this occurs, use mild shampoo or soap and plenty of water to bathe and rinse your cat. If sensitivity persists, notify your veterinarian. Be sure to have the product label or container handy when reaching out to your veterinarian.

What special precautions are there?

  • Never use this product on nursing, pregnant, medicated, aged, debilitated, or pesticide-sensitive animals without veterinarian approval.
  • Avoid contact with clothing, eyes, and skin. This product can cause temporary but substantial eye damage. Wash your hands thoroughly using soap and water after use before using tobacco, chewing gum, drinking, or eating. Contaminated clothing should be removed and washed before re-wearing.
  • Keep out of reach of animals and children.

What to do if overdose?

Contact your closest emergency animal hospital.

How can I store Vectra for Cats?

Store in a dry and cool environment. Protect from freezing.
Disposal - If empty, do not reuse the container. Place in trash or offer for recycling if available. If partially filled, call your local solid waste agency for disposal instructions. Never place unused products down any indoor or outdoor drain.



1. Remove applicator from package.

2. The cat should be standing or in a comfortable position for easy application.

3. Remove a tube and applicator from the package. Holding the tube (applicator) upright, pointing away from face place thumb and index finger around the applicator tip under the large disk. With other hand, grasp the stem of the applicator tip above small disk. Press down firmly on small disk until both disks meet, piercing the seal. (See Illustration)

4. Part the hair down to the level of the skin and slowly apply the product at the base of the cat’s (and/or kitten’s) neck until the tube is completely empty, as shown in the diagram below. Avoid superficial application to the cat/kitten’s hair.

5. Discard empty tube as outlined in Storage and Disposal.

6. Repeat once a month or as recommended by your veterinarian, but do not apply more often than once a month.

7. For optimum treatment, control and prevention of adult fleas, flea eggs, flea larvae and flea pupae, year-round treatment is recommended.

First Aid

If in eyes:
Hold eye open and rinse slowly and gently with water for 15 - 20 minutes. Remove contact lenses, if present, after the first 5 minutes, then continue rinsing. Call a poison control center, doctor for treatment advice.

If swallowed:
Call a poison control center, doctor immediately for treatment advice. Do not induce vomiting unless told to do so by a poison control center or doctor. Have person sip a glass of water if able to swallow. Do not give anything by mouth to an unconscious person.

If on skin:
Take off contaminated clothing. Rinse skin immediately with plenty of water for 15 - 20 minutes. Call a poison control center, doctor, or 1-800-999-0297 or after 6 pm EST call 1-888-426-4435 immediately for treatment advice.

Have the product container or label with you when calling a poison control center or doctor or going for treatment. You may contact 1-800-999-0297 or after 6 pm EST call 1-888-426-4435 for emergency medical information.

Main Ingredients

Active Ingredients 
Dinotefuran 22.00%
Pyriproxyfen 3.00%


TOTAL 100.00%

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Vectra for Cats

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