Sergeant’s GUARDIAN® Flea & Tick Collar for Cats, Fresh Scent

Looking for an effective and affordable way to protect your cat from fleas and ticks for up to 7 months? Slip on this adjustable cat flea and tick collar.

  • Kills adult fleas and ticks
  • Features water-resistant break-away collar
  • No messy applications, won’t wash off
  • Starts working on contact
  • For cats 12 weeks or older
  • Fresh scent

Sergeant’s®: Affordable Pet Care for Over 150 Years


For use on cats and kittens 12 weeks of age and older. Do not use on animals other than cats as shown on product package.

Read the entire label carefully before using any product on your cat. For additional help or more information, our social care team is available to answer your questions Mon-Friday, 8am to 4pm CST. Or you can call us at 1-800-224-7387.

Do not open package until ready to use. Do not let children play with collar. This collar is intended for use only as an insecticide. The collar will begin to kill fleas, ticks, and flea eggs and larvae immediately. Its full protection against harder to kill ticks will be built up within a few days after being placed on pet. For continuous protection under normal conditions, replace collar every 7 months. Wetting will not impair the collar’s effectiveness or the pet’s protection. If the cat is out in the rain, it is not necessary to remove the collar. The collar may be worn with a regular collar.

How to Apply:

1. Unroll the collar and stretch to activate insecticide generator.
2. Place the collar around cat’s neck. Adjust for fit, and buckle in place. The collar must be worn loosely to allow for growth of the cat and to permit the collar to move around the neck. A properly fitted collar is one that, when fastened, will snugly slide over the pet’s head.
3. Any excess length of the collar beyond 2-3 inches should be cut off, wrapped in newspaper and placed in the trash.
4. Wash hands after placing collar on cat.

Hazards/Warning Statements

Hazards to Humans:
CAUTION: Do not open protective package until ready to use. Do not let children play with this collar. Harmful if swallowed or absorbed through skin. Causes moderate eye irritation. Avoid contact with skin, eyes, or clothing. Wash thoroughly with soap and water after handling and before eating, drinking, chewing gum, using tobacco or using the toilet. NOTE: This product contains a chemical known to the State of California to cause cancer.

Hazards to Domestic Animals:
Do not use on kittens under 12 weeks and weighing less than 5 lbs. Consult a veterinarian before using this product on debilitated, aged, pregnant, medicated, or nursing cats. If used on pregnant or nursing cats, do not replace collar until the kittens are at least 12 weeks old. Sensitivities may occur after using ANY pesticide products for cats. Some animals may become irritated by any collar if it is applied too tightly. If this occurs, loosen the collar. If irritation continues, remove collar and bathe your cat with mild soap and rinse with large amounts of water. Do not use this product on animals simultaneously or within 30 days before or after treatment with or exposure to cholinesterase inhibiting drugs, pesticides, or chemicals. However, flea and tick collars may be immediately replaced with new collars.

First Aid

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

If on skin or clothing:
Take off contaminated clothing.  Rinse skin immediately with plenty of water for 15-20 minutes.  Call a poison control center or doctor for treatment advice.

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 eyes.  Call a poison control center or doctor 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 also call 1-800-781-4738 for emergency medical treatment information. Note to Physicians and Veterinarians: This product contains tetrachlorvinphos which is a cholinesterase inhibitor. Cholinergic symptoms may include salivation, miosis, incoordination, muscle fasciculation and/or weakness, vomiting and diarrhea. Atropine is antidotal. 2-PAM may be effective as an adjunct to atropine.

Storage/Disposal of product

We recommend storing the product in a cool, dry place inaccessible to children and pets.  Do not refrigerate or store in direct sunlight.

Do not reuse container or used collar. Dispose of in trash.


What are the benefits of using this product?

7 months protection
Kills fleas and ticks
Water resistant

What is the difference between this product and oral flea products?
This product is applied to your pet around the neck and kills fleas through contact with the product on your pet’s skin, so fleas don’t have to bite to die. With oral flea medications, fleas must bite your furry family member and be exposed to the medication in the pet before the fleas are killed.

Can I apply a flea & tick squeeze-on to my cat after I have applied the collar?
No. This will put your pet at risk of an overdose of flea/tick product.

Can you use oral flea & tick medications with this collar?
No. This will put your pet at risk of an overdose of flea/tick product.

How do these products spread over a pet’s body? How long does this take?
The collar uses sustained release technology by releasing the active ingredient at a steady rate for up to 7 months. The cat’s natural oils help to distribute the product through your cat’s skin and coat providing full body protection. It should start working soon after application, but maximum effectiveness may not occur for a few days after placement.

How does this product work?This product uses one active ingredient:

Tetrachlorvinphos attacks the flea’s nervous system – paralyzing and ultimately killing it.