Precor IGR Concentrate

$6.70 - $52.32

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  Size/Description Price/Ea. Qty  
Precor IGR Concentrate bottle (1 oz.) $6.70
Precor IGR Concentrate - Box (10 x 1 oz. bottles) box (10 x 1 oz. bottles) $50.50
Precor IGR Concentrate - 16 oz. bottle 1 pint (16 oz.) $52.32
Total Price: $0.00


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Precor IGR Concentrate

Only Precor IGR's molecules move to the places pre-adult fleas live, like the base of carpet fibers and between furniture cushions - in short, the sources of a flea infestation. Precor IGR targets fleas in the egg and larval stages of development. As a result, pre-adult fleas cannot produce new infestations of breeding, biting adults. PREVENTS ADULT FLEA EMERGENCE FOR 7 MONTHS.

For control of active flea infestations, this product works best when combined with an adulticide such as Suspend SC or Demize E.C. which will help to provide quick knockdown of adult fleas.

See our entire selection of professional IGRs.


Active Ingredient: Methoprene
Target pests: Fleas. Does not work on ticks. For Ticks, see Precor 2000 plus.
For use in: indoor control only of pre-adult fleas - up to seven full months. Does not work outside in direct sun.
Application: Apply at a rate of 1 oz per 1 gallon of the diluted spray solution per 1500 sq ft of surface area with any low pressure sprayer with a fan tip that is typically used for indoor applications.
Pet safe: yes, when dry.
Yield: Prevents adult flea emergence (by preventing flea eggs and larvae from maturing) for up to 7 months as long as carpet is not shampooed or steam cleaned. This means if a flea egg drops off of infected dog, flea egg will not develop. 3 year shelf life.
Manufactured By: Zoecon (UPC: 041535371906)



Precor® IGR acts on the immature stages of a flea’s life cycle. Flea eggs deposited on or flea larvae crawling onto treated surfaces will not develop into adult fleas. Existing adult fleas and flea pupae are not affected and thus, Precor® IGR Concentrate is generally used in conjunction with an approved insecticide labeled for adult fleas. Effective, long-lasting indoor control of pre-adult fleas - up to seven full months. Mix with water to make 1 gallon of finished product. 1 oz.

To prevent infestations before they start, apply PRECOR prior to flea season.

When applied to surfaces where fleas are found, such as carpets, upholstered furniture, and pet sleeping areas, PRECOR prevents adult flea emergence for up to 7 months. Controlling fleas on pets is important to prevent introduction of adult fleas indoors. If fleas are a problem on pets, treat the pets with an effective EPA registered flea control product.

METHOD AND RATE OF APPLICATION
Prepare a diluted spray solution with a final (S)- Methoprene concentration of approximately 0.007%, by adding 1 oz of PRECOR to 1 gallon of water. Partially fill the mixing container with 1/2 gallon of water, add PRECOR, shake well, and then add the remaining 1/2 gallon of water. Shake well before each use. When tank-mixing, follow the directions above except add the product to tank mix first, agitate, and then add PRECOR, agitate and complete filling of spray tank, and agitate once more. Apply at a rate of 1 gallon of the diluted spray solution per 1500 sq ft of surface area with any low pressure sprayer with a fan tip that is typically used for indoor applications. Treat all areas harboring fleas, including carpets, furniture, pet sleeping and bedding areas, and throw rugs. Treat under cushions of upholstered furniture. Avoid contact with treated surfaces until dry.

When applying to upholstery where staining could be a concern, apply dilution to a small inconspicuous location to determine if possible staining could occur. Generally, PRECOR will not stain areas that would not be stained by water alone.

Rating Snapshot

5 stars   18
4 stars   1
3 stars   2
2 stars   1
1 star   2

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Average Customer Rating
4.3 star rating (24 reviews)

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

    5 of 5 Stars  Precor works
    By Jesse on January 3, 2009

    Precor IGR Concentrate is fantastic for keeping the fleas away. We would recommend it to anyone.

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  • 22 of 23 people found this review helpful:

    5 of 5 Stars  Precor cure!
    By Zac on August 15, 2010

    I bought this stuff as backup. I used a bunch of the Precor foggers along with some Ultracide to get rid of the flea issues I was having. They took care of the problem. I bought this stuff just in case I needed it. Precor does the job, folks! Fleas have been bad in my state this year. EVERYONE has had fleas. EVERYONE! I gave 2 bottles away for people to try. They used this as the IGR (like box states) and then used cheap store brand foggers to kill the adults. They also agree, this stuff works good for the non-adult stages.

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  • 15 of 15 people found this review helpful:

    5 of 5 Stars  Precor IGR Concentrate
    By JC on July 24, 2011

    Had used Precor IGR Concentrate some years ago but it became unavailable at any of the outlets in this area. Precor is probably the absolute most effective product for the control of fleas. The area here is having a sand flea epidemic/infestation due to migration of sand fleas because of the severe drought conditions. It took three applications of Demize EC and Precor IGR to finally render the house flea free. The first application was a mixture of four ounces of Demize and two ounces of Precor in two gallons of water. The second and third application were done with two ounces of Demize and one ounce of Precor in one gallon of water. This was done on three successive Friday mornings. The fleas gradually disappeared, and haven't seen any fleas since.

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  • 13 of 13 people found this review helpful:

    5 of 5 Stars  Flea Control
    By Dagmar on August 1, 2011

    I ordered this after I found an empty bottle left by a pest control company that I had been paying every month, but cancelled because I was not happy with their service. I looked Precor IGR up on the internet and was very pleased to know that I could order it myself and do the pest control. I already knew it worked and was happy that I could save money by doing it myself. I liked the free shipping and the customer service rep. was very helpful. I am glad I asked about the existing adult fleas as this product does not deal with that issue. She directed to another product to mix with Precor IGR and I am happy to say, both products work wonderfully. After my initial investment, I will be saving money and be free of fleas and ticks.

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  • 11 of 12 people found this review helpful:

    5 of 5 Stars  Precor combined with Suspend SC
    By T on November 6, 2011

    I used this product in combination with Suspend SC for a flea problem that many other products failed to eradicate. One application and no fleas or signs of fleas for over two weeks. One word of caution, there was a stout chemical odor for about an hour, but we just closed up the house and left for the afternoon and aired out upon return. Product worked fine for our family and we were all impressed that it actually performed as advertised.

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Most Recent Customer Reviews
  • 1 of 1 people found this review helpful:

    5 of 5 Stars  Quick & Easy
    By Marcus on September 14, 2014

    Great product. The individual bottle was quick and easy to add to my pump sprayer and enough to cover my smaller backyard along with the inside of my house. I did not have a flea problem but do have two inside dogs, so I used the product as a precaution. So far so good!

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  • 3 of 5 Stars  First time use
    By John on August 23, 2014

    It's hard to evaluate IGR concentrate because I am using commercial spray can, diatomaceous earth, and vacuuming in combination IGR. California is having a problem with ants this year and fleas are a new feature of the season.

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  • 5 of 5 Stars  Great for fleas
    By James on August 19, 2014

    Had a bad flea problem outside didn't notice till I brought them in house I have 2 inside only cats. Sprayed with telstar 1/2 oz per gal.and I bottle of precore haven't seen a flea since been about a month

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  • 5 of 5 Stars  how to evaluate effectiveness
    By Alvin on July 12, 2014

    the chemicals are available to reduce the prevalence of fleas. however it is difficult for someone uneducated to method to conduct an evaluation of their effectiveness. I am presently using more than one product, but if i were not, also using a good set of curved jaw surgical hemostats mu dogs would be suffering a lot. it's as if someone were dropping a load of fleas in my yard on a regular basis.

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  • 1 of 1 people found this review helpful:

    5 of 5 Stars  great stuff
    By Matador401 on May 16, 2014
    Verified Purchase

    I walked through the house with white socks, looked down at my socks, must have been 20 fleas on each one, sprayed precor 3 times along with another chemical to wipe them out!!

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  • 2 of 2 people found this review helpful:

    5 of 5 Stars  Works like a charm
    By Robert on March 31, 2014

    It took about 2 weeks for the chemical to work, but the fleas that were terrorizing our home are completely gone. I only had to spray our baseboards, carpets, and fabric surfaces twice. We experienced no ill effects at all. I noticed that just about the time I stopped seeing them, the fleas that I did see were very large and very lethargic. So, if you spray Precor, that may give you a sign that it's doing it's intended purpose.

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  • 5 of 5 Stars  Precor IGR Concentrate
    By Forrest on November 27, 2013

    I bought Precor IGR Concentrate online. It came, and i have used it. I won't know if it works for a couple months or so.

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  • 5 of 5 people found this review helpful:

    5 of 5 Stars  The homeowner's "Missing link"
    By Will on June 11, 2013
    Verified Purchase

    You will likely never control a flea infestation with products from local home improvement stores--not without a monumental amount of effort. Precor IGR is the missing link in the homeowner's arsenal against an established flea infestation. Coupled with an adult flea killer, it helps to attack all stages of the flea life cycle. Thank you Domyownpestcontrol.com for providing me access to this wonderful insect growth regulator!

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  • 2 of 5 people found this review helpful:

    1 of 5 Stars  Not satisfied
    By Tonya on November 15, 2012
    Verified Purchase

    Well, I used this product along with Precor IGR Concentrate Instruction Label for Precor IGR Talstar P (Talstar One) Petcor Flea Spray Ultracide - 20 oz. I followed the directions that the representative gave me and what was on the label. The Petcor Flea Spray I could not tell that the fleas were even a little bit mad when I put that on the dogs. After Spraying the house (EVERYWHERE) I vacuumed before, after, and every day and I did notice there were not as many fleas but they were still in the house. I used the outside spray along with the IGR Concentrate and I still have fleas. I have sprayed twice a few days apart and I'm still overrun with fleas. I do not know what else I'm supposed to do because after reading all the reviews I guess I was hoping for a miracle. Oh, well, guess I'll go else where and try something else.

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  • 6 of 6 people found this review helpful:

    5 of 5 Stars  Precor IGR
    By Gene on October 21, 2012
    Verified Purchase

    A few years back my entire house was loaded with fleas, where my cats would not walk on the floor. I heard about, and ordered Precor, that is after spending a lot of money on other methods, which did not work, and many years of misery, which killed two of my cats. Within about a week of so after using Precor, my house was flea free, and has remained that way ever since. I cannot voice enough praise for this product. I order it and give it to anyone who tells me they have a problem with fleas.

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Most Helpful Q&A's

October 18, 2009 Andrea asked:

QIs Precor IGR safe around dogs and cats?
I know you said Precor IGR is safe after it is dry. I have only hardwood floors in my house. Will it harm my dog who lays on them, even when it is dry?

ANo, once the Precor IGR is dry there is no worries about harm to a pet that lays on the surface.  Remember that Precor IGR is not an insecticide; it does not kill the insect.  It is a product that prevents adult insects from reproducing and is more of a pheremone type chemical that "messes" up the life cycle process of an insect.  It is very safe around children and pets and this is why it so popular to use these products in schools, day cares, and dog kennels.

22 of 22 people found this answer helpful.
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August 3, 2011 Lynn asked:

QWhat product can I purchase from you that can be mixed with Precor which will kill adult fleas?

ATengard SFR would be a great choice for flea control. Tengard SFR is labeled for broadcast sprays on carpets and other flooring and can be mixed with Precor IGR for flea control.

14 of 15 people found this answer helpful.
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June 21, 2010 Kristin asked:

QHow long does is take Precor IGR Concentrate to dry after application?
I need to treat 2 bedrooms, living room, and kitchen. I don't have anyplace in the house to stay while waiting for the product to dry, so I've got to find someplace to go. The length of time it will take to dry will affect my choice of place to go.

ATypically most liquid applications take about 30 mintues to dry.  Specific times will vary based on temperature in the home and other factors. 

8 of 9 people found this answer helpful.
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November 29, 2009 Mary asked:

QI got Precor IGR on my skin. Is Precor IGR safe?
I read that methoprene (Precor IGR) is not toxic to humans. And it is found in some foods. I got this all over my body even in my hair and did not wash it off. What is the worse thing that could happen to me? Will I go bald and my skin sag?

AMethorprene (Precor IGR) is a very safe product that is non toxic to humans.  I'm sure you have showered off by now.  There should be no issues or worries with the product, it just needs to be washed off.

8 of 10 people found this answer helpful.
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September 28, 2012 Jeff from Beckley, Wv asked:

QIs it safe to apply Precor IGR to mattresses and box springs for flea control?

AYou do not need to actually spray the mattress and boxspring with Precor for it to effect fleas that may be hidden there. If you spray around the area where the bed is located the fleas will still be effected because of the unique molecules of this product. You should also thoroughly vacuum the bed to remove as many fleas eggs and larva as possible.

8 of 8 people found this answer helpful.
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Most Recent Customer Questions

January 17, 2014 Layla from New Orleans, La asked:

QCan I mop after a Precor application?
All of the floors in my house are hardwood. Since we do not have any carpet, I think the fleas are in the cracks between the floor boards. Will mopping remove the Precor, or will there still be enough left in the cracks to work? I would rather not wait months to mop the floor again, but if it means getting rid of the fleas, I can deal with it.

A You should thoroughly vacuum the hard floor before applying Precor (mixed with an insecticide labeled for indoor flea applications, such as Onslaught) paying special attention to all cracks and crevices. This will help remove a great deal of the flea eggs, pupae and the debris they can develop in. Mopping can be done before the application and you should wait to mop for about two weeks after the application. Please test the Precor on an inconspicuous area of the floor to be sure it does not mar the finish.

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October 2, 2013 Dewayne from Warren,oh. asked:

QDoes the Precor IGR Concentrate work on roaches?

A The Precor IGR is only labeled to control fleas.  We recommend using an IGR such as Nyguard or Gentrol to help break the roach infestation cycle. We also recommend using a roach bait gel such as Advion Roach Bait Gel to help get rid of those roaches that harbor in areas where you cannot spray (cabinets, drawers, counters, around sinks)

1 of 1 people found this answer helpful.
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August 15, 2013 Ellen from Rossville, Ga asked:

QMy daughters home is crawling with fleas! She has bombed 2x to no avail. We need experienced help..
To tell us which product to purchase. The house is carpete, and fleas are in furniture. Precor was recommended but question is, which one for extreme flea infestation?

A Precor 2000 or Ultracide would be a good choice for indoor carpeted areas. Precor 2000 and Ultracide come ready to use, no mixing or equipment is needed and they contain both an insecticide for a quick knock down of biting adults and an insect growth regulator for control of developing flea eggs and larvae. Infested areas 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.

1 of 1 people found this answer helpful.
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April 29, 2013 La from Texas asked:

QCan you use Precor IGR on your pets? Or mix a little in a soap bath to kill fleas and ticks ?

A We do not recommend applying Precor directly to your pets. We recommend applying products that are labeled for application to pets like Petcor and Martins Prefurred.

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December 12, 2012 Ca asked:

QI purchased both Precor IGR and Demize E.C. from you. Can I mix them together in the same sprayer?

A Yes, you can mix both together in the same sprayer. However, Demize EC is not a residual product, we would recommend that you also add an insecticide such as Conquer that is a residual.

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April 27, 2012 Dave from Pekin, Illinois asked:

QCan you use Precor IGR outside in yard?
My wife is strict about useing insecticides in the yard or house. I just wanted to get started with an IGR outside which I thought would really help with fleas in the yard in a few weeks.

A Precor IGR is not photo-stable and cannot be used outdoors. We do carry Archer IGR and Martins IGR which are photo-stable and can be used outdoors.

4 of 4 people found this answer helpful.
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February 23, 2012 Sl from Mt Pleasant Pa 15666 asked:

QIs Precor effective against insects besides fleas?

A Precor IGR is labeled for fleas only. We do have other Inest Growth Regulators (IGR) that are labeled for a wide variety of insects such as Gentrol IGR and Martins IGR. Be sure to read the product label of the product you choose before purchasing to make sure the pest you are trying to control is listed. You can find product labels on the individual product pages on our website under the picture of the product.

1 of 1 people found this answer helpful.
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January 26, 2012 Chuck from St.petersburg Florida asked:

QWill Precor kill bed bugs and eggs on a bed mattress?

A Precor IGR is not labeled for bedbugs and may not be effective for this type of treatment. You should also note that Precor does not kill adult or juvenile insects of any kind. We recommend that you encase your mattress and boxspring with Protecta Bed encasements and you thoroughly and consistently treat the entire room with products that are labeled for bedbugs such as those contained in our bedbug kits.

7 of 7 people found this answer helpful.
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November 6, 2011 Edward from Baltimore, Md asked:

QAfter Precor IGR has been sprayed on all my floors, should I need to clean my floors to remove any residue?

A If you mop the floors or steam clean the carpets where Precor has been applied you will be effectively removing any residual control you would have gotten from the application. We can tell you that fleas do not usually develop out in the open on hard floors so if Precor IGR was sprayed on hard flooring there should not be any issue with cleaning the area now.

3 of 4 people found this answer helpful.
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August 21, 2011 Bb from Oakton, Va asked:

QIs IGR safe to use with diatomaceous earth, Permetherin, and if so, what it the recommendation (instructions)?
With so many products out there, it is overwhelming, particularly when trying to figure out what can be used together and how to use them together in a safe manner. Toxic chemicals (particularly carcinogens) are pretty scary. While I do not own a pet and have never had flea problems before, I found 4 the other day. First time and have no idea how they got there. Is IGR safe to use with diatomaceous earth, Permetherin, and if so, what it the recommendation (instructions)?

A You can safely mix Precor IGR with Permethrin and apply as a broadcast spray on carpets and under furniture. You can also use diatomaceous earth in areas listed on the product label in a home that has been sprayed with permethrin/Precor. Be sure to read and follow the product labels for best results. Also, vacuuming prior to the first treatment and every other day for 14 days following the flea treatment will help get rid of the fleas much faster than spraying alone.

4 of 4 people found this answer helpful.
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