Virbac Knockout E.S. Area Treatment Spray, 16-oz can

By Virbac
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Virbac Knockout E.S. Area Treatment Spray is the inverted aerosol house spray containing pyrethrins and permethrin to kill active flea and tick infestations. Also, contains pyriproxyfen (NYLAR Insect Growth Regulator) to prevent flea infestations from developing for up to 7 months. One 16 oz can covers 2,100 square feet.

Virbac Knockout Spray provides rapid relief from active flea and tick infestations. Contains the highest levels of environmental adulticides in an aerosol for maximum effectiveness and quick killing of fleas and ticks. Prevents reinfestation of fleas by stopping immature fleas from developing into the adult biting stage. Reaches fleas hidden in carpets, rugs, drapes, upholstery, pet bedding, and floor cracks for greater effectiveness. No mess. Leaves no unpleasant odor or sticky mess and, when used as directed, does not stain furnishings.

Key Benefits

  • Kills active flea and tick infestations
  • Covers 2,100 square feet
  • Prevents flea infestations from developing for up to 7 months
  • Reaches hidden areas for greater effectiveness
  • Leaves no unpleasant odor or sticky mess

See all items by Virbac

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Customer Reviews

Rated 4.5 out of 5 by 32 reviewers.
Rated 5 out of 5 by Excellent for combating fleas! We found out our cat had fleas, & WOW when they say 2-4 months to be rid of them in your house-they mean it. We are going on 2 months and have seen a major change because of using this product. We used this product on select items in the house. Because this is heavy chemicals we used it sparingly since we have kids. We also used Diatomaceous Earth, and with the combination of the two products so far we are winning the battle. Also a plus that one dose of Knockout is good for 7 months. Great product! August 22, 2016
Rated 5 out of 5 by Truly AMAZING I was being attacked like crazy, my apartment is all carpeted and getting getting off the bed was a nightmare, id have about 10 miniscule blood suckers on me everytime i walked on the floor. I swear they just seemed to appear in a week. My poor fur babys hated them too. I powdered the floor like 3 times vacuumed and they persisted, i bought a hand spray still they seemed to attack more. Finally after reading reviews i caved in and got 2 of these bottles of virbac knockeout e.s. area treatment spray can 16 oz. Omg this stuff is AMAZING i can walk in my home again and they seem to be gone. Also i treated my cats with capstar pills and it works like a charm, these two products together truely brought peace and comfort back to my home. By the way, i only needed one can for my two bedroom apartment, still im keeping my other bottle for peace mind. Truly amazing stuff. Thank you virbac. June 24, 2016
Rated 1 out of 5 by Would not buy again Followed all directions and I still have fleas, wasted money, big money. August 18, 2016
Rated 2 out of 5 by Not a solution I think I heard the fleas laughing at me. It did nothing to deter them. I am going back to Mycodex. August 17, 2016
Rated 5 out of 5 by A big help. My cats are indoor-outdoor, so of course they bring a flea in this has become a vital play in keeping down the infestation and spread, a few cats stay in now they don't pick up that flea. Also I would vacuume every other day now I feel comfertable with once a week. :-) August 11, 2016
Rated 5 out of 5 by product excellent and easy to use product excellent and easy to use,no mess,odor does not last long August 7, 2016
Rated 5 out of 5 by Came Highly Rated Though our pets all are treated with Frontline, we noticed a couple slow-moving fleas on them after a hot and humid couple of weeks. Just as a precaution, we used this product on our carpeting. We never actually noticed a problem in the carpeting, but once you see one of those buggers, you can't bring out all the 'big guns' fast enough. The situation was rectified in a couple of days, but I'd use this product again if those ugly beings showed up again in our house. I think the Frontline did it's duty so don't forget to always use it on all your pets, even your indoor kitties because once the flea is in the house, they'll go wherever they can. July 11, 2016
Rated 5 out of 5 by No more fleas I love Virbac products! The best in flea control. I have leather couches. I sprayed the product on the back fabric side some over spay got on the leather. No damage! I use it everywhere, even in my car. I rescue and I'm always picking up dogs that have fleas. A good vacuum and this product, repeat = no more fleas. July 27, 2016
  • 2016-08-26 T09:58:32.821-05:00
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