Conquer Liquid Insecticide

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Conquer Liquid Insecticide

Conquer Residual Liquid Insecticide Concentrate controls numerous pests in and around structures.

Active Ingredient: Esfenvalerate 3.48%
Target pests: Ants, Cockroaches, Crickets, Earwigs, Fleas, Flies, Gnats, Millipedes, Mosquitoes, Moths, Psocids, Scorpions, Silverfish, Sowbugs, Spiders, Ticks and Waterbugs.
Manufactured By: Paragon


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. 16 oz. Bottle

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) Read product label for complete instructions and safety precautions before using the product.

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 50x40 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. Read product label for complete instructions and safety precautions before using the product.


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

Rating Snapshot

5 stars   41
4 stars   5
3 stars   0
2 stars   2
1 star   3

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Average Customer Rating
4.5 star rating (51 reviews)

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Most Helpful Customer Reviews
  • 20 of 23 people found this review helpful:

    5 of 5 Stars  By far the best
    By Thomas on April 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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  • 17 of 20 people found this review helpful:

    5 of 5 Stars  The Best
    By Gayle on April 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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  • 12 of 12 people found this review helpful:

    5 of 5 Stars  Amazing!
    By Jennifer on July 8, 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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  • 9 of 9 people found this review helpful:

    5 of 5 Stars  Super Strength
    By J on June 8, 2011
    Verified Purchase

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

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  • 9 of 9 people found this review helpful:

    5 of 5 Stars  Problem Solved
    By Charles on October 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  Strongly recommend this for fleas
    By Usrika on December 11, 2014

    I ordered Archer IGR along with Conquer for my house. I have two dogs and we were all getting bitten by fleas for weeks. I tried different techniques to get rid of the fleas such as baking soda, salt treatment, etc. Nothing worked. Archer and Conquer combination was awesome. Mixed them together as per the instructions and sprayed both indoors and outdoors. Not seen a flea since then. Archer kills the flea eggs and Conquer kills the adult fleas. Strongly recommend these for any household with flea infestation.

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  • 5 of 5 Stars  Conquer
    By Beth on October 28, 2014

    I bought this because I found a flea on my indoor cat, must of hitched a ride from the dogs, even thou they're on flea meds, it works beautifully! I mixed it with the IGR a preventative! Brought the cat to the vet three weeks later, and there was no sign of the flea or flea dirt! I'm very satisfied! I would recommend this to anybody and I'd buy it again in a heartbeat!!

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  • 5 of 5 Stars  the best sloution for fleas. CONQUER
    By Derek on September 14, 2014

    I live in hawaii and every summer i spend most of the day indoor as soon as i walk out there would be like 10-20 fleas on my legs my kids legs would get all sores from them i have 1 dog and she would need to be cleaned daily i tried everything at homedepot,walmart,kmart, city mill nothing i spent hundreds on pest sprays that never worked DA. Earth never got rid of the fleas when i walked around there would be 10 fleas at most on my legs it wasnt good enough so i seen conquer read a few reviews and tought why not i tryed everything else and now i can walk around with no fleas at all and i only sprayed it once its been almost a month now and conquer made my yard a flea free zone dont watse your money get conquer

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  • 1 of 1 people found this review helpful:

    4 of 5 Stars  Easy to Dispense, Worked Great
    By Marcus on September 14, 2014

    I previously used a powder-based insecticide that left a white residue all around my baseboards. Conquer did not do that at all. The container was extremely easy to measure and dispense the correct amount for my sprayer. I have not had any bug problems since using the product and am very satisfied with the results.

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  • 5 of 5 Stars  BEST Bug Spray EVER!
    By Toni on September 2, 2014

    We've been using Conquer for many years and it really works! It last for a long time as well. We've used it around our pets and never had any issues. I tell everyone to use this product. It's easy to use and mixes with water. This is the same stuff your pest control company is probably using. If you are able to use a sprayer to apply the product inside and outside of your property then why pay someone to do it for you? You can't go wrong with buying Conquer.

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  • 5 of 5 Stars  Conquer Liquid Insecticide
    By Charles on June 29, 2014

    Excellent and effective product. Received in one piece.

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  • 5 of 5 Stars  Excellent Product
    By Rachel on June 3, 2014
    Verified Purchase

    Excellent product, the moment I spray it over my floor ants were killed right away Also I spray it by the perimiter of the house and up to date no bugs, ants, etc have been seen

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  • 5 of 5 Stars  very satisified!
    By Ashley on May 18, 2014

    This stuff is amazing! We were having trouble with camelback crickets (aka sprickets) and decided to give this product a try after all the positive reviews. This stuff worked wonders. A couple of days after we sprayed we only saw three of them in our home but they were so highly affected by the chemicals that they did not move. After that we have not seen any. I highly recommend this product!

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  • 5 of 5 Stars  Happy Wife Means a Happy Life
    By Lewis on May 17, 2014
    Verified Purchase

    Bought this to spray my house for camouflage crickets or "sprickets" as my wife calls them. The day after I sprayed under, in and around my house I only found two sprickets (down from about 5 a day) which were both incapable of jumping away.

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  • 2 of 2 people found this review helpful:

    5 of 5 Stars  Good Stuff
    By Nick on December 5, 2013
    Verified Purchase

    Used with nygaurd for a flea problem. When mixed with nyguard there is little odor, almost a slight saline odor. Not offensive at all and done wonderfully on the fleas.

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Most Helpful Q&A's

March 28, 2011 Hn asked:

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).

6 of 6 people found this answer helpful.
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December 5, 2011 Alexander from Puerto Rico asked:

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.

5 of 5 people found this answer helpful.
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November 23, 2009 Bruce asked:

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.

4 of 4 people found this answer helpful.
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September 22, 2011 Tara from Clayton Nc asked:

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).

3 of 3 people found this answer helpful.
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January 19, 2012 Michael from Wilmington, Delaware asked:

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.

3 of 4 people found this answer helpful.
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Most Recent Customer Questions

November 15, 2014 Mary from Robertsville, Mo asked:

Qwill this work in winter.
Will the condensation in the morning be the same as rain as far an making it ineffective

A Yes, Conquer Liquid Insecticide will be effective during the winter as long as there is not snow on the ground. As long as you allow 6 hours betwween application and any expected rainfall, irrigation, or morning dew the Conquer Liquid Insecticide will remain effective for about 30 days.

0 of 1 people found this answer helpful.
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July 24, 2014 Scott from Elmira,ny asked:

QWill Conquer Liquid Insecticide kill digger wasps in the ground?

A No, Conquer Liquid Insecticide is not labeled for digger wasps. We would recommend Cyonara 9.7 Insecticide to kill digger wasps. You will used 0.2 fl. oz. to 0.4 fl. oz. per gallon of water. You will apply directly to the affected area for a residual effect. Please let us know fi you have any additional questions.

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June 14, 2014 M. from Olathe, Ks asked:

QWhat can I use inside and out for clover mites
I have used Bifen inside and out for a year. I still have an infestation of mites.


Bifen IT should eradicate clover mites. It may be that you are dealing with another species of mite. We highly recommend getting the mite properly identified by your local cooperative extension office to be sure. Please click on the link below for their contact information.

Cooperative Extension

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May 24, 2014 Duncan from Zillah, Wa asked:

QIs Conquer effective against peach tree borer?

A Conquer is not labeled to be used on peach trees.  You can use a product that contains permethrin but it must be labeled for use on edible vegetation such as Tengard SFR. Unfortunately once the beetles have already infested the bark of a peach tree there are not any viable treatment options. In cases of infestation the general recommendation is to simply protect the surrounding trees with preventative sprays with a product labeled for such a use.

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March 23, 2014 Jeff asked:

QWhat is the difference between Conquer and Demon Max?
Mainly using it for spiders and ants.


Conquer and Demon Max are both residual insecticides but contain different active ingredients. Conquer contains Esfenvalerate and Demon Max contains Cypermethrin. Both are labeled to treat many insects including spiders and ants.

1 of 1 people found this answer helpful.
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October 6, 2013 Phil from Bethpage Ny asked:

QWill Conquer kill cave crickets? If so, how much should I apply?


Conquer is labeled for all species of crickets. You will mix 2 fl oz per gallon of water per 1,000 sq ft. Please the label below for more detailed information.

Conquer Product Label

1 of 1 people found this answer helpful.
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September 21, 2013 Misterd007 from Youngstown,oh.44511 asked:

QWill Conquer will for tick control?

A Conquer is labeled for tick control. When used as directed for ticks on the product label Conquer will do a great job for you. Please take a few moments to watch our tick control video to learn some great tips:

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September 5, 2013 Pattrizzia from Deptford, Nj asked:

QCan I mix Conquer and Demon together?
I've used Conquer for many years. Very effective. Found your web site and now I order from you. I also recently ordered Demon. I saw someplace on your site where two other insecticides were being mixed together before application via the spray pump.

A These products should not be mixed together. There is no valid reason to mix Demon WP and Conquer together.  Conquer is a synthetic pyrethroid and Demon WP already contains a synthetic pyrethroid, so there would be nothing to gain by mixing these products together. Making a pesticide too strong can actually backfire. Areas that are treated with this overly concentrated spray will be repellent and insects will simply avoid the treated areas prolonging the infestation.

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August 29, 2013 K. from Plymouth, Wi asked:

QIs Conquer and Archer safe to put on hard wood floors?
We have HWF throughout our house and I want to use Conquer and Archer products because we have fleas EVERYWHERE! Is it safe for the floors?

A Conquer and Archer should be safe on your floors if water is okay to be used on them, but we always recommend testing a small inconspicuous spot first to make sure no adverse affects will take place. That being said, it is very rare to have a flea infestation when there are no carpeted areas for the fleas to harbor, as hardwoods and flat smooth surfaces like that flooring do not provide proper conditions for that insect to thrive. A better option if you do have fleas would be to use one of our flea aerosols like Ultracide to treat your flooring as this will provide you with both the insecticide and IGR(birth control) that you would be getting with the Conquer and Archer, but it will be an easier, cheaper and safer application for your hardwoods. Make sure you are treating all pets with a flea topical like Frontline or our version of it by Martins Flea & Tick, and the outdoor areas the pets travel to prevent them from bringing more in as this would be where they originated. The Conquer and Archer mixture would be a great option for your outdoor flea control. Also, make sure you are vacuuming every day, even with hardwoods as this will help stimulate any eggs to hatch out and be exposed to the product you are using faster. You can see how to do a proper flea treatment in our video "How To Get Rid of Fleas Indoors" and for extra tips see our article on How To Get Rid of Fleas.

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July 12, 2013 Brian from Loves Park, Illinois asked:

QIs Conquer Liquid Insecticide safe to spray in the kitchen for ants?

A When used as directed on the product label, Conquer is safe to spray in a kitchen.  Ants are especially difficult to get rid of.  This is because an ant colony can reproduce new ants almost faster than you can kill them.  Conquer will only kill the ants it touches.  The key though to ant removal is eliminating the nest.  Most of the time you have no idea where the nest is.  So, you have to use a product that will not kill the ants right away so they will take it back to the colony and spread it around, eliminating the source.  This is where ant baits come in.  Ant baits are a food source that the ants in your kitchen will eat and take back to the colony.  It will not kill them right away.  This is the only true way to eliminate your ant problem is to kill them at the source.  If you do not kill the colony, you will continue to battle them all summer.  One important note is you need to stop spraying the Conquer until you get some ant bait, and do not spray until after your ants are gone.  If you continue to spray the Conquer, the ants will die before they get back to the colony with the bait.  Our most popular ant elimination product is our Complete Ant Kit.  It comes with an ant granular bait to apply outside around the house, and a gel bait to apply in your kitchen.  It has a very high success rate and is our most popular ant kit.

1 of 1 people found this answer helpful.
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