Conquer Liquid Insecticide

$26.75 - $283.08

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4.5 out of 5 stars Rating: 4.5

81 Reviews | 58 Q&A


{ $26.75 { $26.19 $283.08
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Conquer Liquid Insecticide pint (16 oz)

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Conquer Liquid Insecticide - CASE (12 pints)Conquer Liquid Insecticide - CASE (12 pints) case (12 pints)

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Conquer Liquid Insecticide

Conquer Residual Liquid Insecticide Concentrate controls numerous pests in and around structures. Application within residential and commercial buildings including homes, apartment buildings, kennels, and non-food areas of industrial, institutional, and commercial buildings, such as hospitals, hotels, warehouses, truck trailers, railroad cars, theatres, office buildings, and schools.

Conquer is a great multi-pest insecticide offering a lasting residual. This product may be used indoors and outdoors to eliminate insect intruders. Conquer is labeled for most stored product pests, Ants, Cockroaches, Crickets, Earwigs, Fleas, Flies, Gnats, Millipedes, Mosquitoes, Moths, Psocids, Scorpions, Silverfish, Sowbugs, Spiders, Ticks and Waterbugs.

Conquer is a very effective product to control fleas (and ticks) indoors and outdoors.

To control fleas indoors:

Mix 1 oz of Conquer with 1 gallon of water in a hand sprayer. Apply on carpeted areas and underneath furniture where fleas may harbor taking care not to get solution on hardwood floors or wooden furniture. (you may also add 1 oz Precor IGR Concentrate to 1 gallon of the finished Conquer/water solution for more effective flea control).

Please read our informative article on How to Get Rid Fleas Indoors for complete instructions on how to do an indoor flea treatment.

To control fleas outdoors:

For a 50 x 40 yard mix 2/3 fl. oz. of Conquer with 12 gallons of water. To obtain best results, lawn should be mowed a day or two before spraying. Using a hand sprayer apply in a slow, even sweeping motion, being sure to cover the entire lawn surface where the pests will normally frequent. Spray under ornamentals and trees, but avoid soaking young or flowering plants. If needed, repeat application treatment in 7-14 day intervals.

Please read our informative article on How to Get Rid Fleas Outdoors for complete instructions on how to do an outdoor flea treatment.

To Kill Ants, Centipedes, Cockroaches, Crickets, Earwigs, Millipedes, Psocids, Scorpions, Silverfish, Sowbugs, Spiders, and Waterbugs:

Apply diluted spray with a sprayer that produces coarse, wetting droplets into all cracks and crevices in woodwork and floors, underneath sinks, areas behind pipes, and in all non-food contact places where these insects shelter. Use a dosage of one (1) gallon of spray dilution per 1,000 square feet (40mls/L). Contact as many insects as possible with direct spray. Repeat application as needed, but do not exceed more than one (1) application every seven (7) days in restaurants and similar food service establishments or more than one application every fourteen (14) days in all types of food handling establishments.


All outdoor applications, must be limited to spot or crack-and crevice treatments only, except for the following permitted uses.

  1. Applications to soil or vegetation.
  2. Applications to lawns, turf, and other vegetation.
  3. Applications to the side of a building, up to a maximum height of 3 feet above grade.
  4. Applications to underside of eaves, soffits, doors, or window permanently protected from rainfall by a covering, overhang, awning, or other structure.
  5. Applications around potential pest entry points into buildings, when limited to a surface band not to exceed one inch in width.
  6. Applications made through the use of coarse, low pressure spray to only those portions of surfaces that are directly above bare soil, lawn, turf, mulch or other vegetation.

Rating Snapshot

5 stars   65
4 stars   6
3 stars   1
2 stars   4
1 star   5

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Average Customer Rating
4.5 out of 5 stars (81)

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Most Helpful Customer Reviews
  • 27 of 31 people found this review helpful:

    5 of 5 stars  By far the best
    By Thomas on 04/17/2008

    It works. Conquer insecticide is the best stuff I have ever bought. I have tried all the rest this is far the best.

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  • 25 of 28 people found this review helpful:

    5 of 5 stars  The Best
    By Gayle in Oxford, Al. on 04/12/2010
    Verified Purchase

    We have 3 cats and 1 dog. Last year the fleas nearly made us all go crazy! I finally found Conquer and Archer on this web page (best prices) and finally..... FINALLY we got our lives back!!! It worked, was easy to put down, just make sure you follow instructions. About a week more fleas! It's once again time to put down in the yard. Thanks for a wonderful product that works!

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  • 18 of 18 people found this review helpful:

    5 of 5 stars  Amazing!
    By Jennifer in Chesapeake, VA on 07/08/2010
    Verified Purchase

    I used a Conquer and Archer mixture for my flea problem inside and in the yard and it knocked it out 1-2-3. I had used other foggers, sprays, powders and granules with no luck. Conquer and Archer did the trick.

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  • 17 of 18 people found this review helpful:

    5 of 5 stars  This stuff is great!
    By Jessie in Memphis, TN on 08/24/2010
    Verified Purchase

    Following the specs for an infestation, I had dead roaches all over the place. I had to clean the floors for three days in a row, it's better than anything I've ever used, and I've used a lot of brands. Try it (Conquer), I believe you will be satisfied.

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  • 13 of 13 people found this review helpful:

    5 of 5 stars  Problem Solved
    By Charles in 29 Palms ,Ca. on 10/15/2010
    Verified Purchase

    My reason for buying this product was utter desperation. We have a small dog run for an even smalller dog,Over the last 2 years we hired 3 nationally know exterminator companies for the sole purpose of erradicating an infestation of ticks from that run. All failed . One application of the Conquer Insecticide ,following the clear and simple directions, has eliminated what seemed to be an un-solvable problem.

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Most Recent Customer Reviews
  • 5 of 5 stars  The greatest for fleas!
    By Bill in Boynton Beach, FL on 11/23/2017

    For two months I had fleas. I had as many as 50 bites on my legs at a time. When I'd walk from the bed to bathroom I'd see 2-3 fleas on my legs. I bought borax for the carpet. I went to Home Depot, Walmart and bought different flea sprays. The fleas seemed to have a party and just got worse! Nothing worked! I bought Conquer and the IGR and mixed a batch. Sprayed. Not a single flea appeared again the second after I sprayed! Wow! Now, I remember about 30 years ago an exterminator recommended this when I had fleas. It worked then too.

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  • 5 of 5 stars  great product
    By William in oxford al on 11/03/2017

    easy to mix kills fire ants

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  • 5 of 5 stars  Awesome
    By William in White House, Tn on 08/02/2017
    Verified Purchase

    I purchased this because my pest control service wasn't getting it done. They started strong but fizzled the last few times. But living right on the edge of the woods I knew I would need more than Home Depot had to offer. Thanks to domyown I got everything in one place, free shipping fast. I am a satisfied customer. Great stuff!

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  • 5 of 5 stars  Excellent product
    By Lenzie in Stoneville, NC on 07/08/2017

    Purchased to control squash plant pests. After only one application, saw almost no squash bug eggs and just a few squash bugs. Squash vine borers had been killing several plants every few days, but have not had a single plant die since I started spraying the lower section of the plants.

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  • 5 of 5 stars  Follow the directions
    By South in Valdosta,Ga on 06/24/2017

    Works !

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  • 1 of 1 people found this review helpful:

    1 of 5 stars  This product did not work on fleas outdoors
    By Brent in McDonough, Georgia on 06/20/2017

    I had a major flea infestation in my backyard caused by a feral cat and her kittens. I sprayed Conquer as directed and it didn't kill the adult fleas. They were just as bad the next day. I'm still looking for a product that works.

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  • 0 of 1 people found this review helpful:

    5 of 5 stars  cutants
    By Dale in port aransas texas on 05/28/2017

    Seems to do the trick on suppressing the cut ants, wish I could find a product to get rid of them.

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  • 5 of 5 stars  Great Product
    By Nancy in Rockford Illinois on 04/27/2017
    Verified Purchase

    This stuff works!. I have tried everything to get rid of fleas and I got this and by golly I started seeing them disappear. I buy once a month and spray regardless if I see them or not. I have a 4 story house so it is easy for a mouse to get in somewhere. This is a great price too and with free shipping you can't beat this.

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    By Vyrene in Austin on 03/29/2017

    I have been using this for sometimes, because it is the best for those ants, that show up in your yard after it rains. This is a great product to quickly get rid of them.

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  • 5 of 5 stars  Cut Ant Cure
    By Kent in New Braunfels on 03/20/2017

    We have had a big problem of ants taking leaves off of our bushes. None of the big box stores had a product that worked. We ordered the Conquer Liquid and applied it to the tunnel entry as directed. Very satisfied with the results.

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Most Helpful Q&A's

04/17/2011 William

QDoes Conquer kill bed bugs?

AConquer is not labeled for bedbugs and is not intended for use on bed bugs. There are many other products on the market that have been tested and labeled for bed bugs. Phantom is one of our most popular bed bug products as it is non-repellent and there is no known resistance to this product. You can check out the rest of our bed bug products by clicking on the Bed Bugs tab at the top of any page on our website.

14 of 14 people found this answer helpful.
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03/28/2011 Hn

QIs Conquer safe to spray inside of a dog kennel if the dogs are present?
I would like to use this in a dog kennel with dirt floors, is it safe for the dogs to be in the area when the building is being sprayed?

ADogs must be removed from the area that is being sprayed. The dogs can return as soon as the area is dry (usually less than 1 hour).

11 of 11 people found this answer helpful.
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09/22/2011 Tara from Clayton Nc

QCan I add Martin's IGR to Conquer? What will the indoor/outdoor mix ratio be in the one gallon sprayer?
I need to kill the fleas indoors and outdoors. Can I buy the 1 oz. bottle and mix that in with the Conquer? I have a 1500 sq. foot home and a 1/4 acre yard.

AYou can add Martins IGR to Conquer for flea control. You can mix 1 ounce of each product into one gallon of water to treat 1,000 sq ft area. When treating outdoors you can increase the volume of water to insure even coverage in areas with dense vegetation (i.e., use 2-5 gallons of water with the 1 oz of each product).

7 of 7 people found this answer helpful.
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11/23/2009 Bruce

QWhat is the mixing ratio I need to conquer these fleas with Conquer?
Got rid of dog. Back yard is now infested with fleas. 40 to 50 fleas cover my jeans when I step out back. Terrible. I will no doubt buy the IGR as well. Can I mix them together? Thanks.

AMix 1 oz of Conquer with 1 gallon of water in a hand pump sprayer and apply at a rate of one gallon per 1000 square feet. (you may also add Archer IGR to 1 gallon of the finished Conquer/water solution for more effective flea control.  Archer IGR is made for outdoors and holds up better in the sunlight. Read the product label for complete instructions and safety precautions before using the product.

7 of 7 people found this answer helpful.
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12/05/2011 Alexander from Puerto Rico

QHow effective is Conquer on ticks? Would Archer IGR be a good addition?
I have a tick infestation that I've been battling for months. I have two siberian huskies that I usually bring inside during the day and to sleep at night, sometimes in the bed. I've tried another department store product, Bayer Advance Complete Insect killer, and it's proven ineffective.

AConquer is labeled for ticks and should do a great job for you. The addition of Archer IGR will be necessary to help you get control of the tick population on your property. Do not make spot applications outdoors. Treat the entire area where exposure to ticks may occur. Use more water (not more product) when treating areas with dense ground cover or heavy leaf litter. Ticks may be reintroduced from surrounding areas on host animals. Indoors, thoroughly apply as a spot treatment to infested areas such as pet beds and resting quarters; nearby cracks and crevices; along and behind baseboards, window and door frames; and localized areas of floor and floor coverings where these pests may be present. Repeat treatments will be necessary to achieve and/or maintain control during periods of high pest pressure. All of your dogs should be treated with a product that is specifically labeled for use on dogs for tick control.

You can also help by creating a "tick safe zone" in your yard. You should have an area that is at least 9 ft wide between your yard and any wooded area. Trim back trees to allow as much sunlight as possible into your yard. Keep grass as short as possible. Remove as much leaf litter as possible. A clearly defined, well manicured border between your yard and any wooded areas or weedy lots will reduce the chance of ticks infesting your yard.

7 of 7 people found this answer helpful.
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Most Recent Customer Questions

12/16/2017 Walter from Wa

QIs the Conquer Liquid Insecticide good for treating German roaches?


Conquer†will kill the roaches and other insects that contact a treated surface but should not be the only product used to effectively eliminate an infestation. We would recommend one of our roach control kits. You can see the kits by clicking on the link†here. We also have a great article for eliminating German Roaches†here.

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10/25/2017 Kurt from Westfield, In

QCan Conquer Liquid Insecticide be applied as a broadcast spray across large carpeted areas along with Precor IGR?


Yes, per the†Conquer Liquid Insecticide†product label:† †"For the†control of fleas, thoroughly apply a fine particle broadcast spray, using 1†ounce per gallon†of water, to†infested rugs, carpets, and pet resting areas. The addition of an IGR like Precor IGR Concentrate is recommend when treating for fleas."

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08/17/2017 Andrea from Orange Cove, Ca

QDoes Conquer Liquid Insecticide kill black widow spiders?


Conquer Liquid Insecticide is labeled for treating spiders. For more information on treating spiders, please take a few moments to review our article on How to Get Rid of Spiders for a successful eradication program.

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07/13/2017 Annette from Lake Ariel

QCan I turn on ceiling fans to help Conquer dry?


Yes, you can use ceiling fans in an area where Conquer has been applied.†

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06/26/2017 Ronald from Calhoun

QDoes the grass need to be dry before spraying Conquer Liquid Insecticide on it?


Conquer Liquid Insecticide†needs to be applied when you are not expecting rain for 24hrs. It is recommended for yard treatments the lawn be mowed 1-2 days before application. We would recommend applying Conquer Liquid Insecticide†after the lawn has been mowed and not wet. Please refer to the product label for instructions for the specific pest you are treating.†

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03/21/2017 Brenda from Hobart, In

QDoes the insect carry the residual of Conquer Liquid Insecticide back to the nest?


The insects have to contact the areas that were treated with the Conquer Liquid Insecticide to be eradicated. It is not a non-repellent that is transferred to the other members of the colony. Arilon would be a great product to apply to interior and exterior areas to transfer like a bait, depending on what pest you are treating.

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09/30/2016 Mike from Aberdeen, Nj

QCan you clean vinyl siding a few weeks after it's been treated with Conquer Insecticide?
I've recently applied Conquer to the exterior of my home and about 3ft up the siding. If I used a power washer to clean the siding will this render the chemical on the siding useless?


Yes, you can clean the siding after applying Conquer Insecticide with soap and water. The residual will stay in the area for at least 30 days. A pressurized sprayer would likely remove the residual product from the area

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09/16/2016 Jenna from Stony Brook, Ny

QHow soon does Conquer kill crickets?
Sprayed perimeter of house with Conquer this afternoon. 7 hours later, a massive number of crickets are in my house-- worse than ever. Is this normal? Am I supposed to wait for the stuff to work, or should it have worked already?


Conquer does not offer a fast kill. Insects should die within 24-48 hours after contacting treated areas. The active ingredient in Conquer is known to be very irritating to insects and it can cause them to be more active before they are eliminated.

1 of 1 people found this answer helpful.
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08/30/2016 Janice

QHow long does it take to see the improvement of using Conquer Liquid for roaches, and how often should I use?


Conquer†will start working immediately on the roaches that come into contact with the treated surfaces. It is not a contact kill so they will not die as soon as they touch it, but it will start to work on their system and will start getting weaker and dying within a few hours of contact. We recommend that in addition to a concentrated liquid insecticide like Conquer you also use a high quality roach bait gel such as†Invict Roach Bait Gel†to help get the roaches that hide in places where you cannot spray (cabinets, counter tops, drawers) as well as an insect growth regulator such as†Gentrol Point Source†to help stop the breeding cycle of the roaches. Take a look at our article on†How To Get Rid of Roaches†to get an explanation of the complete treatment needed to eliminate them.

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08/11/2016 Carey

QHow much Conquer Insecticide do you put in a 50 gallon sprayer for an outdoor flea treatment?


The mixing ratio for Conquer Insecticide in 50 gallons of water is 50-100 fl. oz. The mixing ratio per gallon of water is 1-2 fl. oz. It is recommended that you mix a growth regulator, such as Archer IGR, with the insecticide.†Be sure to do treatments every 30 days outdoors for control.†

1 of 1 people found this answer helpful.
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