Conquer Liquid Insecticide

$26.60 - $281.28

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4.5 out of 5 stars Rating: 4.5

68 Reviews | 47 Q&A



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Conquer Liquid Insecticide pint (16 oz)

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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   54
4 stars   6
3 stars   0
2 stars   4
1 star   4

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Average Customer Rating
4.5 out of 5 stars (68)

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Most Helpful Customer Reviews
  • 24 of 28 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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  • 21 of 24 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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  • 16 of 16 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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  • 12 of 13 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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  • 12 of 12 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
  • 7 of 7 people found this review helpful:

    5 of 5 stars  Fleas and ants
    By Matt in Davie, FL on 02/17/2013
    Verified Purchase

    We noticed our 2 dogs were covered in fleas. After bathing them and flea treatment applied to their backs, the fleas were still there. Enough was enough, searched Do My Own Pest Control and found many positive reviews for Conquer to treat the interior, exterior, and lawn for fleas and other pests. I did combine Conquer with an Insect Growth Regulator (IGR) Archer which was what a few people recommended when I sprayed. One treatment throughout the interior, exterior, and lawn and I am happy to report no more fleas or ants which were also giving me a problem. I would recommend Conquer for it's effectivness, versatility, and reasonable pricing.

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  • 5 of 5 people found this review helpful:

    5 of 5 stars  Conquer Liquid Insecticide & Ant Control
    By Bob in JONESBORO on 12/05/2012
    Verified Purchase

    I am a "Do It Yourself" or at least, try to do it myself, pest control person. I had ants. I didn't take the time to figure out what kink of ants they were which I realize is an important part of controlling ants. I purchased and used Conquer Liquid Insecticide. Killed 'em dead on the spot and I haven't seen any ant trails or ants since. No odor. No damage/discoloration to anything I sprayed. Great stuff and very effective for my ants and I am sure a large variety of other pests.

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  • 10 of 11 people found this review helpful:

    5 of 5 stars  fleas b gone
    By Leslie on 09/20/2012
    Verified Purchase

    I just want to say about two months ago up until recently I was going thru a living nite mare I have never encounter "fleas" before and I never want to ever again. My cat who's never been outside had somehow got fleas still not sure if one jump on me and my family and got in the house or maybe they jump thru my screen door due to cat lady next door constantly feeding the strays. Anyway I was at my wits end going to my local exterminator and local hardware store spending countless dollars trying to resolve this matter with no true resolution. Until one day my guardian angel lead me to this website, I read several reviews and after my second purchase not my first I decided to purchase the triple trio "suspend sc, martins IGR and conquer liquid insecticide, after following the directions I was hesitant to believe this products was truly gonna work nevertheless I was desparate ..let me say omg I truly saw a difference and I would recommend these three products to anyone who encounter this nitemare as I did ...Thanks Dmopc- u gave me my home back. No more fleas /:+)

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  • 5 of 5 people found this review helpful:

    5 of 5 stars  Great stuff for fleas
    By Tim in Lucasville ohio on 08/11/2012
    Verified Purchase

    I fought hard for 3 weeks, ordered conquer,suspend, and Precor...great results after one use...I had used 30 flea foggers and sprayed 25 gallons of things I found at wal mart and lowes...I also covered the area in a fossil flour someone told me about...seriously I was spinning my wheels until I finally used the 3 items from this site.

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  • 6 of 6 people found this review helpful:

    5 of 5 stars  Cutters - Where Are You Now ?
    By Dave in elgin tx on 05/03/2012
    Verified Purchase

    I treated a fairly large area resembling a miniature desert of cutter ant sand dunes with a 2 oz/gallon mix of Conquer. Over two weeks later and only one spray treatment, they're either dead or have gone deeper into the ground. So far, so good, I've told my neighbor about Conquer !!!

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  • 5 of 5 people found this review helpful:

    5 of 5 stars  Conquer Liquid Insecticide
    By Terry in Kingsland, TX on 02/08/2012
    Verified Purchase

    We had leaf cutter ants defoliating our shrubs. My neighbor was trying to control them with a powder, but all online research said to try Conquer. I ordered this from Do My Own, and it arrived in only two days. The product seems to have worked really well. There are no ants near our house. We have to use more on the rest of the half acre, but based on thier absence from around the yard, it's working like a charm. I really liked the service from DMOPC. The fast shipping was awesome!

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  • 11 of 11 people found this review helpful:

    5 of 5 stars  Super Strength
    By J in Hammonton, NJ on 06/08/2011
    Verified Purchase

    Super strength pesticide and very fast delivery. I will buy for you again.

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  • 8 of 10 people found this review helpful:

    4 of 5 stars  EC
    By Rric in Louisville, KY on 05/10/2011
    Verified Purchase

    I used this product in my house and I have not noticed or seen any in rodents for about a month. I would recommend this product to anyone looking to get rid of ants, cockroaches, crickets, fleas, flies, gnats, millipedes, mosquitoes, moths, scorpions, silverfish, sowbugs, spiders, ticks and waterbugs. I really like that it did not have a strong odor to it. I will buy this product in the future. I really wish this product would last longer than 30 days.

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  • 7 of 7 people found this review helpful:

    4 of 5 stars  Conquer Works Really Well
    By Richard in Waco, TX on 09/07/2010
    Verified Purchase

    This product really worked more than any other products I have used so far. It won't kill bugs instantly, but it will kill bugs soon.

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  • 7 of 7 people found this review helpful:

    5 of 5 stars  Fleas
    By Karen in cincinnati, oh on 09/01/2010
    Verified Purchase

    Best stuff ever! Easy to work with and actually works!

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Most Helpful Q&A's

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).

9 of 9 people found this answer helpful.
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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.

8 of 8 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).

6 of 6 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.

6 of 6 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.

6 of 6 people found this answer helpful.
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Most Recent Customer Questions

05/14/2016 Alicia from Chattanooga, Tn

QDoes Conquer Liquid Insecticide have a shelf life?
I purchased some in July 2013.It worked great with Martins IGR. No fleas until I found some on my INDOOR ONLY cats today. We want to retreat the house and are hoping this is still effective to use. I found a 3 year time on the IGR but can't find anything on the Conquer product.


Conquer has a three year shelf life from the date of purchase if kept away from extreme temperatures.†Please take a few moments to read over our article How to Get Rid of Fleas to learn how to implement a successful Flea control program.

1 of 1 people found this answer helpful.
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08/11/2015 Mike from White Lake, Mi

QIs Conquer Liquid Insecticide safe to use when cats are present?


Cats and other pets need to be kept out of the area while Conquer Liquid Insecticide is being applied, and until it has thoroughly dried.  Once it is dry, it is safe for pets to be allowed back into the area.

3 of 4 people found this answer helpful.
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03/12/2015 Phil from San Diego, Ca.

QI bought Conquer Concentrate, how does the 1oz. part refill?

AConquer Insecticide has a tip and pour bottle. You will tip the bottle to the side with the measuring device and squeeze the bottle until it fills up to the 1 fl. oz. line.

2 of 2 people found this answer helpful.
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11/24/2014 Kevin from West Hempstead, Ny

QDoes Conquer kill or repel camel crickets?
I have a situation where camel crickets are jumping into a basement side entrance and are then trapped there. I would of course like to repel them from jumping in there as well as kill any that do happen to make it in there.

AConquer Liquid Insecticide is an insecticide that will kill labeled insects such as Crickets that contact a treated surface and has repellent properties as well.

1 of 1 people found this answer helpful.
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06/26/2013 Whitney from Portsmouth, Ohio

QIs it safe to use Conquer Insecticide with Precor IGR indoors and not leave if area is well ventilated?
I have a three year old, three cats and a rabbit. Along with fleas. It's difficult to find somewhere to take the pets before spraying. Our house had a large industrial fan in the stoc attic that ventilates very well. Would it be safe to remain in the home with the fan on, especially since the ingredients are not strong smelling? We have used them before.

AWe would not recommend staying in the home after treating with Conquer. Some folks will keep their pets and children in one area of the house while treating another. Once the treated area has dried it is safe for children and pets to back around.

3 of 3 people found this answer helpful.
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03/26/2012 Sarah from Fort Walton Beach, Fl

QCan Conquer be used in a yard that is mostly dirt?

AConquer can be used on a yard that is mostly dirt as long as you follow the product label.

1 of 1 people found this answer helpful.
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01/19/2012 Michael from Wilmington, Delaware

QWhen treating for roaches, how far should bait (Max Force) be from insecticide (Conquer)?
I am particularly concerned about treating an apartment where the little kitchen is next to the larger living area. Will the bait be effective if the larger part of the apartment is repelling?

AThe Maxforce Roach Bait Gel should be applied by placing one small pea sized dot every 10-12 inches directly into cracks and crevices around counters, sinks, drawers and cabinets in kitchens and bathrooms. Conquer should be applied along baseboards, in cracks and crevices, under appliances, around door frames, window frames and in areas where utilities (cables, pipes, wires) enter into the structure. There is no set distance you need to keep the products but the general rule of thumb is to keep the baits up high around counters and inside cabinets and to keep the sprays down low near the floor area. Do not apply bait in the same exact spot where you sprayed the Conquer.

4 of 5 people found this answer helpful.
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10/29/2011 Diane from Salisbury, Nc

QWill the Conquer and Archer IGR together be safe for my outside cats, and can I spray upholstered furniture?
It's the fall here. When is the best time to spray? Before it rains? Will rain dilute solution? What can't you spray in the house? How many hours do you need the dogs to stay out of a room you have sprayed?

AAll animals need to be out of the area while you are doing the application and they can safely return after the treated area has dried. When spraying outdoors the area you are treating should be dry at the time of the application and for 24 hours after the application. After 24 hours the products will be rain safe. Conquer and Archer IGR are both labeled to be sprayed indoors but are not labeled for use on upholstered furniture. On upholstered furniture you could use a product that is labeled for this type of application such as Ultracide. Most infestations require a second treatment and severe infestation may even require a third treatment. Treatments should be applied at two week intervals. Infested areas indoors should be thoroughly vacuumed prior to product applications to help remove as much flea eggs, larvae and debris as possible, and also to help stimulate larvae to change stages and come into contact with the product. You should continue to vacuum at least every other day for the next two weeks. Pets should be treated for fleas as well as the areas they spend a lot of time such as pet bed, kennels, carriers, couches, and moist shady areas where they spend time outside.

3 of 3 people found this answer helpful.
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09/01/2011 Alan from Austin, Tx

QDoes Conquer kill leaf cutter ants?
I live in the central tx area and have a problem with leaf cutter ants. I have multiple ant mounds in approx 40x40 area (nest area). I also have ant foraging holes in many areas. I've tried Amdro Ant Block and Ortho Bug B Gone. They don't work well. A web site recommended a residual insecticide like Conquer ( Does Conquer kill leaf cutter ants? Will it kill the queen(s)? Is there anything better to kill the ant?

AConquer will kill ants that make direct contact with treated areas. Leaf cutter ants can be a difficult pest to get rid of. The colonies are large and the ants make their own food so poison baits only have limited effects on this species of ants. According to several university websites Maxforce Complete Granules containing hydramethlynon are some what effective, though they will usually eliminate only about 30% of a large colony in one treatment and will need to be reapplied several times.  Deltagard granules is one of the only products actually labeled for leaf cutter ants. The product label recommends treating the mound directly and lightly watering the granules in. Again it may take several treatments to get the desired results. We also recommend contacting your local cooperative extension office to see if they have any recommendations for products that have worked for other people in your region.

4 of 5 people found this answer helpful.
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09/08/2009 Connie

QHow long does a typical treatment for fleas last when using Conquer Insecticide?

AConquer will last up to 60 days inside a home and for about 30 days when used outside.  For bad infestations outside, you should apply every two weeks.  Conquer will work much more effectively when you combine it with an IGR (insect growth regulator) such as Archer IGR. Inside the home, it is important to vacuum daily (even on hard floor surfaces) and dispose of the vacuum bag or empty the canister (if bagless) outside in a trash bag.

2 of 2 people found this answer helpful.
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