Precor IGR Concentrate

$6.70 - $52.32

Free Shipping!  Free Shipping!

4.5 out of 5 stars Rating: 4.6

56 Reviews | 58 Q&A


{ $6.70 $50.50 $52.32
  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

You May Also Need:

Chapin 1 Gallon Pump Sprayer (#20000) Chapin 1 Gallon Pump Sprayer (#20000)
Conquer Liquid Insecticide Conquer Liquid Insecticide
Cyzmic CS - 0.4 oz Cyzmic CS - 0.4 oz

Availability: Normally ships in 1 business day.
For large order quotes, please call us at 1-866-581-7378.

Precor IGR Concentrate - 16 oz. bottle

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.

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.

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   47
4 stars   2
3 stars   3
2 stars   1
1 star   3

See all 56 reviews »

Average Customer Rating
4.5 out of 5 stars (56)

Write a Review

Sort By: 


Most Helpful Customer Reviews
  • 39 of 41 people found this review helpful:

    5 of 5 stars  Precor works
    By Jesse in MO on 01/03/2009

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

    Was this review helpful to you?  Yes No

  • 31 of 33 people found this review helpful:

    5 of 5 stars  Precor cure!
    By Zac in Western PA on 08/15/2010

    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.

    Was this review helpful to you?  Yes No

  • 29 of 31 people found this review helpful:

    5 of 5 stars  Flea Control
    By Dagmar in Blountville, TN on 08/01/2011

    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.

    Was this review helpful to you?  Yes No

  • 27 of 27 people found this review helpful:

    5 of 5 stars  Precor IGR Concentrate
    By Jc in Onalaska, Texas on 07/24/2011

    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.

    Was this review helpful to you?  Yes No

  • 22 of 23 people found this review helpful:

    5 of 5 stars  Precor combined with Suspend SC
    By T in Spencer, WV on 11/06/2011

    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.

    Was this review helpful to you?  Yes No

Most Recent Customer Reviews
  • 5 of 5 stars  Precor IGR Concentrate
    By Sharon in Byhalia, MS on 10/20/2017

    Effective product; good price; easy ordering process and speedy shipping.

    Was this review helpful to you?  Yes No

  • 5 of 5 stars  Great Product
    By Dawn in Belmont Ohio on 10/20/2017

    This is awesome!! We had fleas so bad my husband had bleeding sores on his legs from scratching flea bites. We sprayed with this mixture and then with home defense spray twice and after about a week we were flea free!!

    Was this review helpful to you?  Yes No

  • 5 of 5 stars  Precor
    By Barbara in Milledgeville Ga on 10/05/2017

    This will kill the fleas

    Was this review helpful to you?  Yes No

  • 5 of 5 stars  This stuff works
    By Rick in He met California on 09/29/2017

    Reliable products fast delivery

    Was this review helpful to you?  Yes No

  • 1 of 1 people found this review helpful:

    5 of 5 stars  It works but be patient!!!
    By Fred in Curwensville pa on 09/17/2017

    So we were INFESTED, kids bit up going to school, mom and I... You MUST attack fleas in my opinion in 3 ways. Clean floors a lot. I sprayed house with precor/suspend poly, and toweled rubbed dogs with petcor. We lost hope still seeing fleas 3 weeks later, and lost hope yet again. A month and a half later we kinda forgot about the gradual flea decrease. 2 months later we asked each other "babe, have you seen any fleas"? She would say it was gradual but this method DID work! Fleas are stinkers and tricky. Don't think a sprits here and there of precor will do it overnight. There's a science to it. Research it on this site, stop wasting money at Walmart and come to this site, dmopc was the only thing that worked for us, shoot I've made a few bucks spraying for friends/neighbors, our camp was infested with lines of ants all throughout. A single treatment of termidor 2 years later still no ants. This company helps, DO YOUR RESEARCH AND READ REVIEWS!!!

    Was this review helpful to you?  Yes No

  • 0 of 1 people found this review helpful:

    4 of 5 stars  Preparing for fleas the weather dictates it
    By William in Alameda on 09/05/2017

    Haven't used it yet but I'm familiar with the products I'm sure I'll be more than satisfied

    Was this review helpful to you?  Yes No

  • 5 of 5 stars  PRECOR IGR CONENTRATE
    By Patti in KATY, TEXAS on 08/31/2017

    I love this product, it is inexpensive, easy to mix up & works wonders for fleas, kills them immediately, I ordered this product twice, I tried others, no more searching. I FOUND THE BEST FOR THE RIGHT PRICE, BYE BYE FLEAS

    Was this review helpful to you?  Yes No

  • 5 of 5 stars  perfect item
    By Doris in marianna on 08/09/2017

    just what i needed for my flea problem at a great price

    Was this review helpful to you?  Yes No

  • 5 of 5 stars  Precise IGR
    By Jimmy in Noble on 07/31/2017

    Great product and easy to use.

    Was this review helpful to you?  Yes No

  • 5 of 5 stars  Super fast flea killing power!!
    By Bob in Missouri on 07/18/2017

    Paid a commercial company to end a flea problem I had in a large building last year. After reading the bill and seeing they used Precor, I purchased the product from Domyown to use this year. Sure enough the fleas came back to a much smaller degree and this Precor KILLS them quickly and with little odor! I cannot recommend it highly enough!!

    Was this review helpful to you?  Yes No

See all 56 reviews »

Have a question about this product?
Ask our product experts...

Ask a Question

Sort By: 


Most Helpful Q&A's

10/18/2009 Andrea

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.

67 of 70 people found this answer helpful.
Was this answer helpful to you?  Yes No

09/28/2012 Jeff from Beckley, Wv

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.

35 of 35 people found this answer helpful.
Was this answer helpful to you?  Yes No

06/21/2010 Kristin

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. 

33 of 34 people found this answer helpful.
Was this answer helpful to you?  Yes No

11/29/2009 Mary

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.

25 of 29 people found this answer helpful.
Was this answer helpful to you?  Yes No

08/03/2011 Lynn

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.

21 of 23 people found this answer helpful.
Was this answer helpful to you?  Yes No

Most Recent Customer Questions

10/05/2017 Ronnie from Beckley, Wv

QCan Precor IGR Concentrate be mixed with Suspend SC?
I have several infestations going on so it would be helpful if I could mix Precor with the insecticide Suspense SC. Any dangers of doing that.


Precor IGR can mixed with other insectides for treating fleas. If mixing with Suspend SC, this would only be applied along baseboards, corners and cracks and crevices since Suspend SC cannot be broadcasted over carpeted areas which is recommended to treat for fleas. NyGuard IGR is a more versitle insect growth regulator and is labeled for more than fleas. 

Was this answer helpful to you?  Yes No

05/02/2017 Jane from San Francisco, Ca

QDoes Precor IGR Concentrate kill flea eggs?
I am using diatomaceous earth to kill fleas in my house, it will not kill flea eggs. Ii read that I need an IGR product to kill the eggs. will this product do the job?


Precor IGR Concentrate does not actually kill anything and will not kill any flea eggs.  It will prevent the young that hatch out of the eggs from developing into reproducing adults.  Precor can be used but we would also recommend using an insecticide spray instead of just diatomaceous earth to get faster results.  We have a great guide here that can explain the best treatment for fleas.

Was this answer helpful to you?  Yes No

04/24/2017 Mandi from Dallas, Texas

QIs it necessary to wash sheets or blankets if Precor IGR is accidentally spilled on them.
Just ordered the pump sprayer and concentrate.


Yes, if Precor IGR were to be spilled on sheets or blankets, it would be necessary to wash them. 

Was this answer helpful to you?  Yes No

04/17/2017 Michael from Drexel Hill, Pa

QCan mix Precor IGR with Talstar P in a gallon sprayer for indoor use?


Precor IGR Concentrate can be mixed with insecticides such as Talstar P.  Though Talstar P cannot be used as a broadcast across interior surfaces such as carpet or hard flooring, it is only for cracks and crevices inside.  If you are treating for fleas and need to treat carpets a better option would be Onslaught or Conquer.

Was this answer helpful to you?  Yes No

04/10/2017 Jamie from Sandy Lake Pa

QCan I use Precor IGR Concentrate in an outdoor dog house?


Precor IGR Concentrate is for indoor use only. It will break down outdoors. For outdoor use in and around dog houses, you can use Tekko Pro.

Was this answer helpful to you?  Yes No

03/03/2017 Jake from Forest Grove, Oregon

QCan Precor IGR Concentrate be used in a ULV fogger?


Precor IGR Concentrate is not labeled to be applied in a fogger. Please check out our list of Fogging solutions.

Was this answer helpful to you?  Yes No

03/03/2017 Dustin from Orlando, Fl

QCan I put an IGR product in my carpet cleaner vacuum?
I have a light carpet cleaner vacuum. It leaves a small amount of water in the carpet as does most carpet vacs. Hence the need to allow them to dry 1-3 hours. Would this be ok, for it would really force the product through out the carpet? If so, hot or cold water?


Precor IGR Concentrate or any other IGR cannot be used in carpet cleaner machines.  They are meant to be used in pump sprayers or other approved equipment only.  

Was this answer helpful to you?  Yes No

02/28/2017 Shannon from Coral Springs, Fl

QCan we spray Precor on laminate wood flooring?
We are also using Talstar on the rugs and carpet. Do we retreat after 14 days


While Precor IGR Concentrate can be applied to flooring, when you are dealing with fleas you would direct treatment to cracks and crevices of hard flooring as the hard surface is not a habitable place for them.  Also Talstar P cannot be used as a broadcast on carpets or rugs or any other interior surface as directed on the product label.  You can only use it inside in cracks and crevices.  Any carpet/rugs treated in this manner should be shampooed/steamed to remove any residual. Fleas treatments are done every 2 weeks with approved insecticides for carpets, such as Onslaught along with the Precor IGR.  Please refer to our How To Get Rid of Fleas guide for complete advice.

Was this answer helpful to you?  Yes No

02/26/2017 Kyle from Buffalo, Ny

QBesides fleas, what other pests can Precor be used for?
I know it has nothing in it and I believe that help with mosquitoes Indian meal moths beetles etc...


Precor IGR is only labeled for fleas to interior listed areas on the products. We do offer other insect growth regulators (IGRs) that can be used for other insects and outdoor areas.

Was this answer helpful to you?  Yes No

01/26/2017 Denise from Delray Beach, Fl

QMy cat was in the house when exterminator sprayed Precor IGR. Will she be safe?


It is recommended that you keep pets out of the area while Precor IGR Concentrate is being applied. Once the product has dried completely, it is safe for your pet to return to the area. Please contact your vet if you have any concerns. 

Was this answer helpful to you?  Yes No

See all 58 questions »

Purchase and Buy Precor IGR Concentrate for sale now
with the best online lowest price and free shipping!

We only sell professional do it yourself pest control (diy), exterminator and extermination
pesticide, chemical and bug killer treatment products to spray, exterminate and eliminate pests.

These products are not available in stores such as Home Depot, Lowes, Walmart or Ace Hardware.
We accept VISA, MasterCard, American Express, Discover and PayPal Payments.