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Frontline Spray

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Product Info
How to Use
Customer Reviews
Product Info
What is Frontline Spray?

Frontline Spray provides long-lasting, effective control of fleas and ticks on your pet. It kills up to 100% of existing fleas in less than 24 hours. Frontline Spray continues killing fleas for an entire month or more.


Cats and Dogs (8 weeks of age and older)

  • Effective against severe existing flea and tick infestations, and kills chewing lice
  • Effective against all stages of ticks, including deer ticks (the major carrier of Lyme disease)
  • Helps control sarcoptic mange infestations
  • Remains waterproof for 30 days, even if your dog or cat swims or is bathed
How it Works:

The active ingredient of Frontline Spray is fipronil, a broad-spectrum insecticide that disrupts the insects central nervous system.


Wear household latex gloves when using Frontline Spray. Consult a veterinarian before using on medicated animals, animals being treated with other pesticides, and debilitated, aged, pregnant, or nursing animals.

Brand Name:

Frontline Spray Treatment for Cats and Dogs (Merial)

Active Ingredient(s):

Fipronil (0.29%), Inert ingredients (99.71%)

What is this product used for:

Frontline Spray Treatment provides fast acting, effective flea and tick control for adult dogs and cats and for puppies and kittens 8 weeks of age or older. It is effective against all stages of the brown dog tick, the American dog tick, lone star tick and deer ticks (the major carrier of Lyme disease). It is also used to kill fleas. Frontline Spray rapidly eliminates infestations with chewing lice and aids in the control of sarcoptic mange infestations in dogs.


Frontline Spray Treatment is a non-prescription (OTC) product.

How this product should be used:

Wear household latex gloves. Hold the bottle in an upright position. Ruffle the animal's coat with one hand while applying spray mist to the animal's back, sides, stomach, legs, shoulders, and neck. For the head and eye area, spray Frontline on a gloved hand and rub gently into animal's hair. Apply spray mist until animal's hair is damp to thoroughly wet. Approximately 1 or 2 pumps per pound of animal's body weight will be required. Reapply Frontline Spray after 30 days. Pet may swim or be bathed 24 hours after Frontline Spray is applied.

What are the side effects:

Individual sensitivities, while rare, may occur after using any pesticide product for pets. If signs persist, or become more severe, consult a veterinarian immediately.

What special precautions are there:

This product is for external use on dogs and cats 8 weeks or older. Consult a veterinarian before using on medicated animals, animals using this product with other pesticides, and debilitated, aged, pregnant or nursing animals. This product is flammable. Keep away from heat and open flame. This product is harmful to humans if swallowed or absorbed through the skin. If swallowed, call a poison control center or physician immediately. Have patient sip water. Do not induce vomiting unless advised to and patient is conscious. If on skin or clothing, take off contaminated clothing and rinse skin with plenty of water for 15 to 20 minutes. See package label for treatment if in eyes or if product is inhaled. Persons applying this product must wear latex gloves.

In the event of overdose:

Contact your veterinarian or veterinary emergency room.

How should I store this product:

Store this product at room temperature. Store in the original container. To dispose wrap original container in several layers of newspaper and discard in trash. Keep out of reach of children and pets.

How to Use
  • Apply Frontline Spray once every 30 days.
  • Wear household latex gloves. Ruffle pet's coat with one hand while applying spray to back, sides, stomach, legs, shoulders, and neck.
  • For head and eye area, spray Frontline Spray on a gloved hand and rub gently into pet's hair. Do not get product in pet's eyes or mouth.
  • Apply spray mist until hair coat is damp to thoroughly wet. In most cases 1 or 2 pumps per pound of body weight will be necessary.
  • As with all flea products, wash your hands and any exposed skin thoroughly with soap and water after applying to your pet.

Use Frontline Spray to control existing flea and tick infestations. Use Frontline Top Spot or Frontline Plus every month to prevent flea buildup or reinfestation.

Dogs/Puppies, Cats/Kittens: (8 weeks of age or older)
All weights
Apply 1 or 2 pumps per pound of body weight every 30 days
Do not use!

Should be stored at room temperature.

Frontline Spray Treatment:
Active ingredients
Customer Reviews
Frontline Spray is rated 4.0738 out of 5 by 149.
Rated 5 out of 5 by from Brilliant I only use Frontline Spray, excellent product
Date published: 2015-08-04
Rated 5 out of 5 by from Frontline excellent product !!!! I'm very happy...
Date published: 2015-06-17
Rated 5 out of 5 by from Great product! Have been using Frontline spray for fleas & ticks for years on all our dogs. We have two small dogs now and it's still a great product. Use as directed, gloves and all. Wash hands after! I even bathe them and it still keeps working.
Date published: 2015-03-26
Rated 2 out of 5 by from Frontline is doomed I actually have used the Frontline drops on my two kittens twice already since August and just treated them again with the spray. I have sprayed my carpets and vacuum daily. They still have fleas on them! Granted, the fleas are just on their feet, but, none the less, I know that these fleas are going to reproduce and we will be right back to square one! I knew that it was just a matter of time before fleas everywhere developed an immunity to Frontline...sadly, I think that time has come. Time to move on to a different product....) :
Date published: 2014-09-28
Rated 5 out of 5 by from Great product! Started using Frontline Spray on my dogs many years ago. The vet had recommended it saying it lasted longer than the Frontline topical. When it went off the market for a couple of years I tried the topical version again only to find out that my American Eskimo is allergic to the carrier in those types of products. I tried several sprays in the interrval and was so happy when the spray was available again. It's the best!
Date published: 2014-07-18
Rated 5 out of 5 by from love it Started using front line when we rescued Rocky from the shelter at 5 weeks old. The vet recommended front line then & that's all we have ever used. Rocky was 7 January 5. To this day have not found the first flea. Just spray on & brush in. Great product!
Date published: 2014-03-31
Date published: 2014-03-11
Rated 5 out of 5 by from i have three female dogs which came from the emergency vet in my area, and i have been using frontline spray for years, back when it was a Rx item and it works very well. I HIGHLY RECOMMEND IT!
Date published: 2014-02-17
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Can this product be used with dogs on k9 advantix 11 ?

Asked by: Kitty
Frontline products should not be used in conjunction with Advantage or Advantix products.
Answered by: Cherley Petmeds Pro
Date published: 2016-03-11

Is this safe to use on my dog who has skin issues?

My Saint B has chewed herself RAW in places because of fleas. Not only is she infested, she has allergies to the little buggers too. We have been treating the allergies with benedryl, the home and yard with sprays, and she is starting a monthly ingested chewable because the topicals have not worked at all for her. We've also bathed her a couple of times however the soaps are just drying her out even more. Will this spray work to help kill the fleas that are on her so she stops itching?
Asked by: Wikisweetz
Most of the flea products work by being absorbed through the oils present in your pet's skin. Bathing of any kind has the potential of washing away these oils as well as drying out her skin. It can take up to a week before these oils regenerate. If her skin is dry, the spray may irritate her skin even more. Please consult with your veterinarian regarding when it would be safe to apply the product so it will be effective.
Answered by: Lilli Pharmacist
Date published: 2015-09-14

How long after the dog is sprayed can he not be touched or petted?

Asked by: mtquinn
I just started to spray my fur babies this month. Pick a day without rain and spray them, let them outside for an hour or so till their dry. Your ready to pet & love you dog!
Answered by: ras
Date published: 2015-03-26

How long after application must you wait before bathing your dog?

I applied Frontline spray yesterday morning to my dog and she rolled in the dirt shortly afterwards. I'd like to get her groomed but don't want to wash the Frontline off. Thanks.
Asked by: Anonymous
Once sprayed on and dried........your safe to give your dog a bath anytime after.
Answered by: ras
Date published: 2015-03-26

Is Frontline Spray harmful if your Dog lick's himself after spraying Him?

Asked by: Buddy
The company recommends not letting your dog lick the Frontline. He may lick after the product dries.
Answered by: PetDoc
Date published: 2014-10-20

Can you use this frontline spray in conjunction with revolution?

Asked by: Anonymous
Thank you for your question. We do not suggest this has they are both flea and tick medications.
Answered by: Maureen PetMeds Pro
Date published: 2014-04-18

Is ther anything that kills, adult fleas, eggs and larvae?

I have had my dog for 11 years and just this week I discovered she has fleas. This is the first time ever that she has them I am mortified this has happened and I feel terrible my pet has to go throug this. I have been reading up on how to get rid of them but the more I read the more confused I get. I have already given her 3 baths in the last week, used a flea comb on her, treated her with Advantage, washed her bedding everyday since discovering. Is there any product that will kill the adult fleas the eggs and larvae?? Please help me and my pet.
Asked by: Anonymous
Thank you for your question. Advantage II kills the adult fleas, eggs and larvae. K9 Advantix II, Frontline Plus and Activyl all kill the adult fleas, eggs and larvae. It suggested not to wash your dog and/or cat 48 hours before and after the topical application. Also ensure that the shampoo you use is soap free so it does not remove the medication from your furry pal.
Answered by: Maureen PetMeds Pro
Date published: 2015-06-20

Does Frontline Spray also work against mosquitos?

Asked by: Becky
The Frontline Spray kills flea and tick infestations, and kills chewing. Frontline Spray is not effective against mosquitoes...
Answered by: Cherley Petmeds Pro
Date published: 2013-09-09
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