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Knockout E.S. Area Treatment

By KnockOut
(42 reviews)
Veterinary Diet Item
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Knockout E.S. Area Treatment

By KnockOut
$33.29
One-time purchase
$19.97 AutoShip & Save up to 40%
Availability:
  • In Stock

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Product Overview

Virbac Knockout E.S. Area Treatment contains pyriproxyfen, a regulator of insect growth. It prevents the development of flea infestations and kills any active infestations. See Allivet's Flea and Tick chart to find which flea and tick product is best for your pet.
*This product cannot be shipped to AK or HI. *Allivet can’t ship this product to CA.
For use in cats and dogs.
Features of Knockout E.S. Area Treatment:
  • Treats homes and areas as large as 2,100 square feet
  • Should only be applied to cloth-upholstered areas and carpet
  • Kills active infestations of fleas
  • Prevents re-infestation for as long as 7 months
This spray product kills active tick and flea infestations, prevents development of flea infestations, prevents reinfestation for up to 7 months, and contains Nylar® to regulate insect growth.
No known side effects
Pyriproxyfen: 2-[1-Methyl-2- [4-phenoxyphenoxy] ethoxy] pyridine, Pyrethrins, N-octyl bicycloheptene dicarboximide, and Permethrin.
Contact your closest animal hospital.
  • This product is extremely flammable. Keep away from heated surfaces, sparks, and fire. Do not expose to temperatures above 130°F, as this could cause the container to burst.
  • Contents are under pressure. Do not incinerate or puncture container.
  • Do not contaminate feed, food, or water by disposal or storage.
  • Apply this product only as directed on the label.
  • Drift from treatment areas could be hazardous to organisms in adjacent bodies of water.
  • This product is toxic to birds and fish. Do not apply directly to water, in areas where surface water is present, or in intertidal areas below the average high water mark.
  • Avoid contamination of feedstuffs or food.
  • Harmful if absorbed through the skin, inhaled, or swallowed.
  • Do not breathe spray mist or vapors.
  • Avoid contact with eyes or skin. If contact occurs, flush with copious amounts of water. Wash with warm water and soap following use. If irritation continues, seek medical attention.
16 oz
Virbac Animal Health
This spray is an excellent choice for use in:
  • Industrial buildings
  • Commercial buildings
  • Veterinary clinics
  • Utilities
  • Warehouses
  • Transportation equipment, including trucks, trains, ships, boats, and buses
  • Supermarkets
  • Schools
  • Motels
  • Offices
  • Kennels
  • Hotels
  • Hospitals
  • Homes
  • Automobiles
  • Apartments
Use VIRBAC KNOCKOUT® extra strength Area Treatment at the rate of 16 oz for up to 2100 sq ft (8 oz for up to 1000 sq ft). Carpeted areas may be vacuumed before treatment and after treatment has dried. Treat infested areas or areas which could be infested; these include rugs, carpets, upholstered furniture, pet beds and pet resting areas. Hold can at arm's length and direct spray toward the areas to be treated. Use a sweeping motion to apply product and back away from treated area while holding the can 36 inches away from the surface being treated. Area of 80-100 sq ft can be treated in approximately 10 seconds with VIRBAC KNOCKOUT® extra strength Area Treatment.
Pyriproxyfen: 2-[1-Methyl-2- [4-phenoxyphenoxy] ethoxy]pyridine
Pyrethrins
N-octyl bicycloheptene dicarboximide
Permethrin

About This Product

Customer Reviews

4.8
42 reviews
5 34
4 8
3 0
2 0
1 0
Ashlee R Verified Purchase
September 19, 2026

This whole process was so easy and this stuff works great and is amazing!!

Paula B Verified Purchase
July 1, 2020

Great product

Kathleen P Verified Purchase
June 9, 2020

I love this stuff. Really gets the job done.

Rhonda g Verified Purchase
June 9, 2020

great product

R W Verified Purchase
October 28, 2019

First time ordering this product and have not used it yet, but I’m basing my rating on my WEB research of Knockout E.S. with just about every review being the most positive.

Megan M Verified Purchase
September 17, 2019

This product is fantastic! We run a rescue and despite our best effirts, sometimes a fkea gets in. Then its havoc! All get treated but of course you have to treat the premises or the fleas hide out and get right back on. KnockOut dries quickly, us eady to apply, and i just keep pets off an area for about 20 minutes. I always keep it in stock.

Janice B Verified Purchase
August 19, 2019

We had a horrible flea infestation in our stable last year. The dogs as well as the barn itself suffered from the fleas. This was the only product that worked to eliminate the problem completely.

Joanna P Verified Purchase
July 31, 2019

I bought this hoping to rid of the fleas. Used it and haven't seen any so far..

Pamela M Verified Purchase
July 22, 2019

Great product!

Kevin D Verified Purchase
June 14, 2019

AAA+++

Randy w Verified Purchase
April 8, 2019

Best price

Tonia P Verified Purchase
August 22, 2018

This product has always worked great anytime I have needed it. I recommend it. It kills fleas on contact. I always keep a few cans on hand, just in case.

Todd P Verified Purchase
August 20, 2018

hopefully this the best product on the market to get rid fleas,we will see.!

Jill L Verified Purchase
May 30, 2018

This stuff kills any bug imaginable. And continues to kill for several months. Since finding the product, I have used nothing else to control fleas and other bugs. Highly recommended!!

Ron b Verified Purchase
May 18, 2018

my vet highly recommended it

Geraldine E Verified Purchase
December 31, 2017

It work fast,

Kelly H Verified Purchase
November 29, 2017

This was recommended by my vet. Since I have never used this, I will not be able to tell about the product until I use it.

David E Verified Purchase
November 21, 2017

For home treatment

Breana E Verified Purchase
November 13, 2017

puuurrrrfect product. I found flea dirt on the dogs, but no fleas. So i knew they were in the house but dying off on the dogs. However, the cat is indoors and therefore not protected. I used this product in order to prevent him from infestation. Not one flea, Not one spec of flea dirt. aces.

Eugene K Verified Purchase
October 24, 2017

Fleas have been horrible in Ohio this year. Flea bombs, etc just seemed to piss the fleas off. My vet recommended Knockout and what a difference!

Nancy P Verified Purchase
October 24, 2017

I have used this product before and find it works really well.

Craig S Verified Purchase
October 19, 2017

vet recommended. seems to work.

JOHN D Verified Purchase
October 19, 2017

Great product, works fantastic!

Catherine P Verified Purchase
October 2, 2017

I've used numerous products in an attempt to alleviate a flea issue I've been dealing with. I was told about Knockout and decided to try it. WOW! this product does exactly what it states! I'll never waste my time on anything else. Knockout is a knock out! Fantastic product and the best priced through Allivet. I'm one happy dog trainer.

Mary R Verified Purchase
July 24, 2017

Great price

Linda S Verified Purchase
April 20, 2017

Knockout Works - and fast!! Super easy. No closing up the house, covering all surfaces, evacuating the entire house for hours -- and it works better than any flea-bomb I've ever used.

Tracey M Verified Purchase
October 2, 2016

Recommended by vet, worked great 1st time, this purchase is for follow up treatment as also recommended

LaDonna R Verified Purchase
June 2, 2016

I'm purchasing this product because it was referred by the pharmacist my pets see for care, I don't want to have flea problems so I was told this would be quick and easy and will last moths to come.

Deborah K Verified Purchase
May 4, 2016

I have used the ES before and it killed fleas as well as the Palmetto bugs aka roaches in my garage in Florida. That was a nice surprise! I hate them more than fleas! Excellent product

Sandra M Verified Purchase
September 15, 2015

Works great.

Lisa F Verified Purchase
July 7, 2015

I purchased Knockout before, on the vets recommendation, and it worked great. You will have those stubborn fleas so a second treatment is usualy required.

Dawn L Verified Purchase
June 1, 2015

Worked great and Allivet was easy to order from...

Belinda B Verified Purchase
May 29, 2015

I've used this product twice/year for years and have never had a problem with fleas in the home.

Laurie R Verified Purchase
May 19, 2015

Best pricing anywhere for Knockout E.S. Area Treatment anywhere! Free shipping on $49+ and anything I need for my pets.....Allivet has it!

Sheryl N Verified Purchase
May 14, 2015

I have used this product for years for spiders. Being terrified of spiders, this product gives me a lot of comfort. I spray it around the corners of every room in the house every 3 months and hardly ever see one! It's also pretty safe for animals to be around after spraying, and that's a great benefit.

James p Verified Purchase
February 21, 2015

works great for fleas and spiders!

Marilynn a Verified Purchase
January 28, 2015

best product, best price

Barry T Verified Purchase
November 3, 2014

I tried other products but found this to work best.

Cindy Q Verified Purchase
October 26, 2014

I have tried literally everything out there, and still had fleas. Knock-out really kills ALL of them and keeps them gone.

David H Verified Purchase
September 1, 2014

Best price I can find. Effective product. They always ship promptly.

Glen T Verified Purchase
August 11, 2014

Once a year product!

Randy C Verified Purchase
July 24, 2014

We tried this once before and were amazed at the effective flea control .... this is our second order.

Questions & Answers