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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 4.1 out of 5 by 152.
Rated 5 out of 5 by from Goodproduct! I brought this for my dog and so far so good.
Date published: 2016-11-12
Rated 4 out of 5 by from Pretty happy so far The fleas have been horrible this year. This spray is one of three items I've had to use to ease my pets suffering. I have three dogs and will know more about effective this is in a couple more weeks. So far, so good.
Date published: 2016-08-21
Rated 5 out of 5 by from Works great Works great. Can't ask for a better product.
Date published: 2016-07-11
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
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Cats instinctively clean themselves, what are the effect of this, were I to apply this to my cat's coat??

Asked by: Lee B
The company recommends not letting your cat lick the Frontline. He may lick after the product dries.
Answered by: Amy Petmed Pro
Date published: 2017-03-14

Hi, I'd like to find a spray I can use around my house. Like the carpets and matresses. I also have a cat and want to make sure If I use this it's safe if my cat lays on the sofa after it has dried.

Asked by: Maltesemom
Sentry Home and Carpet Spray is a household flea and tick spray that kills fleas, flea eggs, flea larvae and ticks in your home. As an added bonus, it offers a patent pending deodorizing technology that helps keep your carpet, furniture, upholstery and pet's bedding odor free.
Answered by: Christine
Date published: 2017-01-27

I use Frontline Plus for my cats and Advantage II for the dogs - can I use this in conjunction with those products? I'm looking for something to help on only when I think the pets need a boost of protection or when they are scratching at something.

Asked by: abner1831
Frontline Plus and Advantage II should work to kill any fleas that come into contact with your pet. Therefore, Frontline Spray should not be necessary. Using it once and a while should not harm your pet, but it may be unnecessary.
Answered by: Christine
Date published: 2016-10-01

Is this product harmful to either dogs or cats, when they lick themselves after being sprayed, before they are dry. On inside cats, how many months before the fleas are completely wiped out, including eggs etc.? 

Asked by: Kate 1816
The company recommends not letting your dog lick the Frontline until after the product dries.
Answered by: Cherley Petmeds Pro
Date published: 2016-09-08

My dog takes bravecto & heartguard, is this product okay to use on him since neither product is topical?

Asked by: McCoy
Yes, it is safe to use the spray in conjunction with the Heartgard and Bravecto.
Answered by: Cherley Petmeds Pro
Date published: 2016-08-10

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: 2016-08-10

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: Anonymous
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: Anonymous
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: Anonymous
Date published: 2015-03-26
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