Precor IGR Concentrate - 1 oz.

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Precor IGR Concentrate - 1 oz.
Precor IGR Concentrate - 1 oz.
Precor IGR Concentrate - 1 oz.
4 of 5 Stars!  Customers reviews (12)
SKU: CS005
Precor IGR Concentrate - 1 oz.
1 bottle(S)(1 oz.)
Precor IGR Concentrate - 1 oz.
3 bottle(S)(1 oz.)
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Precor IGR Concentrate - 1 oz.
1 box (10 bottles)
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Get 10 for only 5.05 each


Precor IGR Concentrate is formulated with Methoprene to prevent the development of adult fleas. Precor controls flea populations by mimicking flea hormones, pupae exposed to the product cannot molt into breeding adults.

Customers Reviews(12)
Questions & Answers(2)

PDfPrecor IGR Concentrate Product Label

PDfPrecor IGR Material Safety Data Sheet (MSDS)

Precor IGR Concentrate - 1 oz.

Precor IGR is an excellent complement to adulticides for complete control of fleas. Precor is an insect growth regulator that works on the insects' larval stages. Its active ingredient prevents larva from developing into reproductive adults. This way, flea population is controlled and ultimately eliminated. Precor can be tank-mixed with adulticides to kill existing adults.

Why Should You Use?

Precor prevents adult flea emergence for seven months.

Target Pest(s): Fleas
Manufactured By: Zoecon
Active Ingredient: (S)- Methoprene - 1.2%
Size: 1 oz.
Yield/Application: 1 oz. per gallon of water
Not For Sale To: NY

Directions for Use

Prepare a diluted solution by adding 1 oz. of Precor to 1 gallon of water. Partially fill mixing container with half a gallon of water and add the concentrate. Shake well to ensure a uniform mixture. Add the remaining volume of water and shake well before using. When tank-mixing with adulticides, follow the mixing instructions indicated in the adulticide product label. Adulticides must be mixed with water first before adding Precor. Apply at a rate of 1 gallon per 1,500 square feet of surface area. Using spray equipment, apply as a coarse, low pressure spray to treatment surfaces. Treat rugs, carpets, furniture, cushions, upholstery, pet beddings, pet sleeping areas and their immediate surroundings. Please read the product label before using this product.

Where to Apply

Precor IGR is for use in and around residential, agricultural, commercial, institutional, public and industrial areas where fleas are a problem.

Please refer to and follow the instructions on the Product label.

Customer Reviews of Precor IGR Concentrate - 1 oz.
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2 of 5 Stars! (2/5)    Review by   Tom Russo  (Posted on )

Didn't work. Had to buy Adam's.

5 of 5 Stars! (5/5)    Review by   Happy Husband  (Posted on )

got rid of the fleas
Used the Precor 2000 Plus on the carpets and Precor IGR Concentrate on the furniture. Neither stained. Fleas gone in hours. Dogs happy. Wife happy. I am happy. I wish I had discovered this stuff earlier. Best price on the internet. Shipped quickly. It was well packed and arrived in good condition. Ordered the Precor Plus Fogger, but didn't need it. I'll save it for next spring.

1 of 5 Stars! (1/5)    Review by   Bill  (Posted on )

Supposed to do what? never kills any eggs.

Reply : Precor IGR is an Insect Growth Regulator (IGR). IGRs do not have a killing effect. Instead, depending on the pest, it regulates their biology so that they are unable to physically mature. Since they are not able to develop to the adult stage, they are unable to reproduce. For fast reproducing insects like fleas, an IGR is a crucial part of control. We recommend using Precor 2000 Plus or Ultracide spray, which has both a killing active ingredient as well as an IGR mixed into the solution. Keep in mind that one treatment or just one type of product will not get rid of fleas. Flea control will take an integrated approach and will require both chemical and non-chemical means of control to eradicate an infestation. For any questions on flea control, please feel free to email us at or call us at 1-888-543-4142.

5 of 5 Stars! (5/5)    Review by   Clifford Ford  (Posted on )

flea growth regulator
My dog actually got an eczematous itchy skin disease because of these fleas so when my friend recommended this Precor IGR Concentrate and said that it’s effective against fleas; I never had any second thoughts and instantly purchased the product. I am so grateful with this item; my dogs’ skin disease disappeared. Highly recommended!

5 of 5 Stars! (5/5)    Review by   Shannon G.  (Posted on )

igr flea control products
I have a cat that I let outdoors. She usually comes in at night but stays on the back deck, which is enclosed. One day she came home infested with fleas and managed to spread them all over the deck. I treated her for the fleas and used the Precor IGR Concentrate on the back deck. No more fleas, no more problem, plenty of product left over. Thank you!

5 of 5 Stars! (5/5)    Review by   Ellen Cohen  (Posted on )

happy with what I did. Thank you!

5 of 5 Stars! (5/5)    Review by   Christina Ho  (Posted on )

flea insect growth regulator
I had a difficult time getting rid of these fleas that my puppy brought home. We treated the dog but it just seemed like they weren't going away. We found that the solution was Precor IGR. It is an insect growth regulator which prevents insects from developing into reproductive adults. If you're having a hard time with fleas, I really recommend this product!

5 of 5 Stars! (5/5)    Review by   Betty McKenzie  (Posted on )

flea igr
One way of successfully reducing the growing population of flea is to prevent the natural or normal maturation of the larvae. It’s so good to know to know that this Precor IGR Concentrate product is very capable of doing so.

5 of 5 Stars! (5/5)    Review by   Heidi McKee  (Posted on )

Thank you Pest mall!

5 of 5 Stars! (5/5)    Review by   Ernest Chu  (Posted on )

flea control
Precor IGR helped me control the growth of fleas when I had a bad problem with them last summer after we got a new dog. It was great and I'm really satisfied. I know most of the flea products here in Pest Mall already has IGR mixed in (the phone operator told me about the other products) but I wanted to make sure and used Precor and it was great.

5 of 5 Stars! (5/5)    Review by   Patrick Huffman  (Posted on )

flea igr
Fleas are insects that are wingless and suck blood. I always keep my family away from fleas because we have dogs and cats here so I decided to buy this Precor IGR Concentrate that prevents the development of adult fleas.

5 of 5 Stars! (5/5)    Review by   Jenny C.  (Posted on )

insect growth regulator fleas
I have four rather large dogs. They like to spend a lot of time outdoors and I often take them hunting and hiking with me. One of them managed to get himself infested with fleas which, naturally, resulted in all my dogs being infested. I had made them stay outdoors for a day or two. I washed them and applied a flea treatment but the creatures will still infesting their dog houses and bedding. I did some research online and found the Precor IGR Concentrate. I chose this because I already had a sprayer and wanted to save some money. It worked like crazy and was so easy to use. My dogs and I are both very happy with this product

Do You Have a Question about this Product? Ask Our Experts!

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Q. Is it correct that I mix "Demize" and "Precor" in the same spray tank with 1 gallon of water ???
A.   Yes, you may mix Demize and Precor in the same spray tank with correct proportions listed on the label.
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Q. Precor IGR Insect Growth Regulator Flea Control 1 oz
Do you have or can you get the silicone defoamer Foam Buster an Anti-forming agent typically manufactured by Helena Chemical?
A.   Unfortunately, we do not have that product and we will not be able to obtain it.
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  Where to buy the best do it yourself pest control products
including Precor IGR Concentrate - 1 oz. insecticides and spray for bug treatments?

It's cheap, effective, and will kill any pest.
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