Sergeant’s GUARDIAN® Flea & Tick Shampoo for Dogs, Clean Cotton Scent

Wash away fleas and ticks during your dog’s next bath time and protect them for up to 10 days.

  • Kills adult fleas and ticks
  • Clean, deodorize, and condition your dog’s coat
  • pH balanced, non-staining formula
  • For dogs 12 weeks and older
  • Clean Cotton scent

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


For use on dogs and puppies 12 weeks of age and older.
*Do not use on animals other than dogs as shown on product package.

Read the entire label carefully before using any product on your dog. 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.

How to Apply:

1. Wet the dog’s coat thoroughly.
2. Next pour Sergeant’s GUARDIAN® Flea & Tick Dog Shampoo into the cup of your hand.
3. Starting at the head and working towards your dog’s back, work up a lather being sure that the lather is worked thoroughly into your dog’s coat down to the skin. Avoid contact with your dog’s eyes.
4. Leave the shampoo on your dog for 5 minutes.
5. After 5 minutes, rinse the shampoo off thoroughly, patting your dog dry.
6. To maintain maximum effectiveness against both fleas and ticks, repeat every week.

Note: Cats that actively groom or engage in close physical contact with treated dog(s) maybe at risk of serious harmful effects.

Hazards/Warning Statements

Hazards to Humans:
Caution: Causes moderate eye irritation.  Avoid contact with skin, eyes or clothing.  Prolonged or frequently repeated skin contact may cause allergic reactions in some individuals. Wear protective rubber gloves when applying this product. Wash hands thoroughly with soap and water after handling and before eating, drinking, chewing gum, using tobacco or using the toilet.  Remove and wash contaminated clothing before reuse.  Apply this product only as specified on this label.

Hazards to Domestic Animals:
FOR EXTERNAL USE ON DOGS ONLY: Do not use on dogs under 12 weeks of age. Do not treat your dog with more than one pesticide at a time. Consult a veterinarian before using this product on debilitated, aged, medicated, pregnant, or nursing dogs. Sensitivities may occur after using ANY pesticide product for dogs. If signs of sensitivity occur, bathe your dog with mild soap and rinse with large amounts of water. If signs continue, consult a veterinarian immediately. DO NOT USE ON CATS. May be toxic or potentially fatal if applied to or ingested by cats. Accidental application to cats and/or grooming a recently treated dog may result in tremors and/or uncoordinated muscle movements. If this occurs, immediate veterinary care should be provided.

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 eyes.  Call a poison control center or doctor for treatment advice.

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.

Have the product container or label with you when calling a poison control center or doctor or going for treatment. For additional information on this product (including health concerns, medical emergencies, or pesticide incidents), you may call 1-877-416-7330.

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.

If partly filled, contact your local waste agency for disposal instructions.  Never placed unused product down any indoor or outdoor drain.  If empty, place in trash or offer recycling if available.


What are the benefits of using this product?

Kills adult fleas and ticks
Cleans and deodorizes in one easy step
Non staining formula
pH balanced

How long will it take for this product to begin to work?
The product should begin to kill fleas within 24-48 hours but may take up to 72 hours to reach its full effectiveness.

What is the difference between this product and oral flea products?
This product is applied to your pet topically 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 put a flea and tick collar on the dog after I have applied the shampoo?
No. This will put your pet at risk of an overdose of flea/tick product.
This flea product will kill fleas and ticks for up to 7 days without any other additional flea products.

Can you use oral flea & tick medications with this shampoo product?
No. This will put your pet at risk of an overdose of flea/tick product.
This flea product is sufficient in killing fleas and ticks without any other additional flea products.  

How does this product work?
This product combines two active ingredients:

Permethrin attacks flea and ticks’ nervous systems – paralyzing and ultimately killing them
Piperonyl Butoxide is a synergist that works with other pesticides to increase their effectiveness

This combination plays a crucial role in existing infestations because insects have enzymes in their bodies that break down some insecticides. Piperonyl Butoxide stops some of these enzymes and allows the insecticides more time to work.