NyGuard IGR


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4.4 Rating: 4.4

35 Reviews | 56 Q&A 


  Size/Description Price/Ea. Qty  
NyGuard IGR bottle (140 ml)

Buy 1: $49.00 each

Buy 2 or more: $48.50 each

Buy 5 or more: $48.19 each

Buy 10 or more: $47.83 each

Total Price: $0.00

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For large order quotes, please call us at 1-866-581-7378.

NyGuard IGR

Nyguard IGR concentrate is a new Insect Growth Regulator with a broad label that delivers excellent results. This product will break even the toughest insect's reproductive cycle to stop future infestations. NyGuard IGR Concentrate is also available in convenient premeasured 1 oz bottles called NyGuard EZ1.

Active Ingredient: Pyridine 10%
Target pests: Fleas, Stored Product Pests, listed Roaches (German, Asian, and Brown-banded, Crickets, Litter Beetles, and Flying Insects
For use in: Inside and out, commercial and residential.
Pet safe: Yes, when used as directed.
Yield: 10 to 27 gallons (depending on dilution and targeted pest; see dilution tables on product label)
Manufactured By: MGK (UPC: 848920000225)

NyGuard IGR gets to the root cause of chronic insect infestations - the eggs, larvae or nymphs - and prevents them from maturing into reproductive adults thereby controlling future infestations. NyGuard IGR will cause morphological anomalies or changes and disrupt the expected insects' state of development, leading to sterility or death. When adults are present, NyGuard is commonly used in combination with a non-IGR insecticide. This method results in rapid eradication of adults and deposits a base level of NyGuard IGR. Since this product has a long residual, it remains in place for up to seven (7) months to actively disrupt the development of any immature stages that have yet to appear, or which were not susceptible to the insecticide product used to control adult insects.

• NyGuard IGR has the broadest spectrum of insects on its label.
• NyGuard IGR is 10 times more active than Gentrol.
• NyGuard IGR is effective both indoors and outdoors.
• NyGuard IGR may be used in food and non-food areas.
• NyGuard IGR keeps working for seven months.

Apply NyGuard as a diluted spray or ULV/fogger to prevent eggs, larvae and nymphs from maturing into reproductive adults. Apply NyGuard in combination with a non-IGR adulticide to knockdown and kill existing adult populations while breaking the cycle of your toughest insect pests.

Rating Snapshot

5 stars   27
4 stars   4
3 stars   0
2 stars   0
1 star   4

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Average Customer Rating
4.4 star rating (35 reviews)

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Most Helpful Customer Reviews
  • 35 of 37 people found this review helpful:

    5 of 5 Stars  Sprayed for fleas got prehatched mosquito's
    By Norma in St. Augustine, Florida on July 10, 2012
    Verified Purchase

    We used a combination of Nyguard and Talstar 1 early in June. We got an immediate kill on fleas, and other nasty bugs outside, but I wasn't expecting the destruction of the majority of the Mosquito eggs. I have lived in this house in Florida for 21 years. For 21 years I had to stay inside much of the time, at dusk especially but also all day and all night because our area had so many mosquitos. A lot didn't seem to be stopped by repellants either. We had a long dry spell and then about a week and a half after we sprayed, it begain to rain some every day, then it rained all day for several days. We needed it badly but I wasn't looking forward to being swarmed by mosquitos. I was astonished! We have had very few even at dusk, and those who managed to hatch are strange. They fly slow enough so that I can kill them before they ever land. It is like they are can't navigate normally. This is the first summer I have not gotten even one bite. I have been able to enjoy the outside again for the first time ever at this house. I reordered the same items and intend to spray one more time before the month of July is over. Just some advice to those who have houses that back up to woods, we sprayed the wooded area as well as the yard. We sprayed our neighbors yard and the small wooded area behind her house. A lot of mosquitos breed under damp leaves that pile up on the ground here in Florida. Well not anymore at may house! We even sprayed across the road in the brush. Good thing too, because they discovered the mosquitos were carrying West Nile Virus in our area. Best thing I ever did in the rhelm of insect control!

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  • 24 of 26 people found this review helpful:

    5 of 5 Stars  This Product Works!!!!
    By Marianne in Roswell, GA on June 7, 2011

    I purchased this product as a safer product to control indoor and outdoor insects (mosquitoes, fleas, flies, roaches, ants, etc....). Nothing bothers me inside or outside after 3 months!!! It's a little slow to start, but once you get it applied around your house and inside your house, your problems are over!!! I had continual repeat flea issues from my Welsh Corgi. I treated the inside of the house and also treated the outside areas where she laid. NO MORE FLEAS!!!! And it does wonders in keeping mosquitoes under control, too!!!!

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  • 21 of 21 people found this review helpful:

    5 of 5 Stars  I am blown away!
    By John in Baxter, Tennessee on July 31, 2012
    Verified Purchase

    This is the very best pest control I have ever used! I had an issue with fleas in my dog pen. I could not get them killed out for nothing until I was told about NyGuard. I used every product I could think of and spent a small fortune! A flea or two would attach itself to me when I would clean my dog pen, and next thing I knew is they were in my house too! NOT ANYMORE! This NyGuard mixed with Demize, totally killed out the fleas...inside and out in 24hrs! And they stayed gone. Now I don't even need flea collars for my dogs! Thanks for such a great product. Send me a hat or something so I can advertise for you, because your product is the best on the market...hands down! I am going to purchase more of this product so I never run out. I NEVER toot someones horn unless they deserve it...and NyGuard deserves it! So, TOOT TOOT!

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  • 21 of 23 people found this review helpful:

    5 of 5 Stars  A true KNOCKOUT
    By David on September 15, 2011
    Verified Purchase

    After fleas had set up house in ours we attempted to get rid of them in the usual manners (fogging and flea powder). We got desperate and were about to burn down the house (not really) and then I found this site. What a life, and house, saver. Less than 2 hours after application the fleas stopped biting and we have never had a problem since. I use it on my balcony for season long wasp and spider control and swear by it. You can't miss when you pick this product.

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  • 14 of 15 people found this review helpful:

    5 of 5 Stars  Excellent product
    By Li in Saint Paul on May 8, 2013

    The person who was talking about how her cats still have fleas weeks later does not know how this product works. It stops the next generation from growing into viable adults. If you have fleas, you have to do a multi-angled approach and not just spray & pray. Seriously, if you don't know what you're doing. Don't buy the product. I've used this for years on all sorts of issues and it's as close to a magic wand as you're gonna get.

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

    4 of 5 Stars  Outside Plan
    By Darryl in South Carolina on October 27, 2015

    We are using this outside and Ultracide inside. The plan is to stop adult fleas. It makes sense to kill adults and prevent more eggs, and the ones that are there, can not grow to the adults stage. It is the best plan that makes sense.

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  • 1 of 5 Stars  NyGuard Doesn't Work!
    By Rick in Rockwood, Tn. on October 21, 2015

    I've sprayed my indoor outdoor carpeting twice with double the recommended strength and still have fleas

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  • 5 of 5 Stars  Great Product
    By Belinda in Pevely Mo on September 18, 2015

    I have used Nyguard IGR for years. Buying from Do My Own Pest Control saves me half of what a local company charges. Follow instructions and it is very safe.

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  • 5 of 5 Stars  Dog Pen Flea Control
    By James in Georgetown on September 12, 2015

    Appears to have worked very well for flea problem in dog area.

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  • 1 of 1 people found this review helpful:

    5 of 5 Stars  Well Done
    By Barry in Winnsboro, SC on August 19, 2015

    I have had animals for 40 years and from time to time have had a flea problem. This summer seemed to get quickly out of control to the point that my dogs and back yard were out of control. I washed everything as best as I could and right up until the time I began to spray I had fleas jumping on my legs. I spray the kennel and worked my way out into the yard doing my best to provide a fine mist onto the grass. Left the area for the advised 30 minute drying period and when I returned...no fleas. Washed them off the dog and even three weeks later I have yet to have a flea jump on me or found them on the dog. We have had 3 or 4 heavy rains since then and still no fleas. Every other treatment I have used wanted me to go back in 14 days to kill the new fleas coming from the egg cycle. Not with NyGuard. Sprayed once and have had no returning pest to speak of. I followed the directions and used the .02 method in the kennel as well as the yard. Great stuff!

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  • 5 of 5 Stars  Would totally buy this again!
    By John in Clearwater, Florida on August 7, 2015

    My company recently took over a small apartment complex with a few units having german roaches. We opted for spraying an IGR to begin the process of breaking the life cycles. We debated between Gentrol and Nygard. Not only is Nygard less expensive, its also a wider range IGR for many pests besides roaches and according to the label, can be used outdoors as well. Gentrol is a fine product, and works well, but for my money I prefer Nygard. Would highly recommend!

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  • 3 of 3 people found this review helpful:

    5 of 5 Stars  This stuff works!
    By Eric in Rumson, NJ on July 6, 2015

    We had a flea problem in our yard last summer thanks to a neighborhood cat taking naps under our porch. We called in a well known pest control company to help. Unfortunately, it cost us close to $300 to eradicate the fleas. Fortunately for me, the technician named the product he used and how much of each for the application mixture on our bill. They were Nyguard IGR and Talstar P. After the initial application we noticed a reduction of the amount of fleas we'd find on our clothes within 3-5 days. We had them do a second application and after the 7-10 day period we never saw another flea and a year later we are still flea free. But, this year we have a Psciod (book lice) infestation in our neighborhood. They are very tiny insects that are harmless to humans/pets. They have been more of a nuisance and we mainly find them on our bathroom floors. A Google search brought me to this website where I purchased Nyguard and Talstar, a safety kit, and sprayer for less than half the cost to do it myself. This also allowed me to decide how potent to make the mixture, how often to spray, and where I wanted to spray. A few hours after spraying I began finding a variety of dead bugs in our yard. The numbers of booklice had been greatly reduced. If they had been confined to our yard only I'm certain this product would have eliminated them. I highly recommend this product and so do national pest control companies. Do it yourself. Save a fortune.

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  • 3 of 3 people found this review helpful:

    5 of 5 Stars  Nyguard works longer than Gentrol
    By Marty in Martinsburg, WV on April 7, 2015
    Verified Purchase

    This IGR seems longer lasting than Gentrol, although Gentrol is a pretty good IGR also.

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  • 2 of 2 people found this review helpful:

    5 of 5 Stars  A great product from a great company.
    By Norma in Saint Augustine, Florida on February 18, 2015
    Verified Purchase

    I can thank you for making it possible to go out in my yard now. The mosquitoes were horrible. We were actually using it for fleas, but it kept mosquitoes from hatching too. For the first time in 24 years I am not being eaten alive when I go outside.

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  • 3 of 9 people found this review helpful:

    1 of 5 Stars  Unhappy with results
    By Richard in 29 Palms, CA on December 1, 2014
    Verified Purchase

    Nyguard did NOTHING to eliminate the pest problem we have even though I followed directions COMPLETELY! I even tried to reapply a second treatment two days after the first, our pests seemed to think it was just a nice shower for them! Very disappointed is all I can say!

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Most Helpful Q&A's

November 18, 2011 Dan from Jupiter, Florida asked:

QI'm using Onslaught to control ticks. I'm thinking I should add an IGR. Is NyGuard IGR a good choice?
Onslaught's Technical Bulletin recommends NyGuard IGR for a tank mix IGR, but NyGuard's label doesn't list ticks.

ANyguard IGR does indeed list ticks on the product and Nyguard IGR would be a great choice for tick control when mixed with Onslaught.

14 of 15 people found this answer helpful.
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January 21, 2013 Stacia from Kailua Kona asked:

QWhat is the mixing ratio for fleas, in a 2 gal. sprayer, talstar P and Nygurard IGR?
what is the mixing ratio in a 2 gal sprayer for fleas mainly(roaches,centipedes,spiders(black widow,cane spider) problem using Talstar P and Nyguard IGR? I dont understand the mixing instructions on Nyguard IGR. Please help.

AIf you want to mix up two gallons of Talstar/Nyguard you will need to add 2 fl oz of Talstar and 6ml of Nyguard in 2 gallons of water and you will need to spray this over a 2,000 sq ft area. Please note that Talstar cannot be broadcast sprayed over carpets and furniture indoors.

13 of 14 people found this answer helpful.
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January 23, 2010 Judy asked:

QIs NyGuard IGR safe to use in a vegetable garden?
It looks like that is where the fleas have made there home. If not, what can be used to treat the soil in an edible garden?

ANyguard IGR is not labeled to be used on a edible vegetable garden.  However, we do have a product called Malathion 57% which is labeled for gardens and will treat fleas.

11 of 11 people found this answer helpful.
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April 3, 2011 Kyle asked:

QHow often can I spray Onslaught and Nyguard IGR together for bird mites?
I'm thinking about ordering Onslaught to combine with NyGuard for a bird mite infestation. I realize that NyGuard isn't approved for bird mites, but I've heard success from others with this problem. I'm wondering how often this combination be used? Also, I've already used the Precor IGR, and I'm worried about using another IGR on top of it. Thanks for your response.

AWe have had several customers tell us that they have successfully used Onslaught and NyGuard together for bird mite control. Unfortunately because neither product is actually labeled for bird mites, we can not give you a definitive re-treatment time. We can say that both products do allow re-treatments after 14 days if you see renewed insect activity indoors.  There should be no problem using NyGuard IGR in a home where you have previously used Precor IGR.

7 of 9 people found this answer helpful.
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April 24, 2014 Kathrin from San Antonio, Tx asked:

QHow soon can I water after using NyGuard around my yard?

AYou want to wait at least 6 hours after applying NyGuard IGR to water your lawn.

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

October 1, 2015 Stan from Eagleville Tn asked:

QWill Nyguard work on bedbugs?


Nyguard IGR is not currently labeled for bedbug control and has not been tested for efficacy on bedbugs. There is only one insect growth regulator labeled for bedbug control, Gentrol IGR. Gentrol must be used in conjucntion with an insecticide to be effective. Please take a few moments to read over our Bedbug Treatment Guide to learn hot to implement a sucessful bedbug treatment program. 

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September 16, 2015 Mandy from Victoria Tx asked:

QHow long do we have to wait before entering house after NyGuard IGR application?
We just sprayed the inside of our house with nyguard and I was wondering how long do we have to wait before we can go inside? I have a 11 month old who is still crawling. Is there anything I need to do to make it safe for him?


You can re enter after the NyGuard IGR treated area has dried. Normally about 2 hours. Like with most insecticides when applied per label it is safe for children and pets to be around after it dried.

1 of 1 people found this answer helpful.
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September 10, 2015 Andrea from Pendleton, Sc asked:

QDo I need to mix anything with NyGuard IGR to kill adult fleas in my home?


NyGuard IGR should be mixed with a liquid concentrate such as Onslaught that can be applied indoors for eradicating the fleas. You can mix the two products together with water and apply once every two weeks (minimum of 2 applications). Please take a few moments to review our treatment article on How to Get Rid of Fleas. Please let us know if you need anything else.

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August 19, 2015 S. from Palo Alto, Ca asked:

QBad fleas in shady yard. Used Bifen Granules and Cyonara 2-3 weeks ago. Still getting bites. What to do? IGR?
I am spraying weekly with Cyonara and had beneath the deck professionally treated with pyrethrin. Yard has a lot of squirrel and skunk traffic


Yes, you are missing the IGR in this Flea treatment. You can mix in Nyguard IGR. Please be aware that it is recommended to only treat every two weeks max with Cyonara

1 of 1 people found this answer helpful.
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July 28, 2015 Ernie from Austin, Tx asked:

QIs using Onslaught and NyGuard IGR on the furniture not a good idea for treating fleas?
I read some reviews that Onslaught (even after drying) caused skin irritation.


Onslaught and NyGuard IGR can be mixed together and applied indoors and outdoors for treating fleas and safe if used as directed on the product labels. Onslaught is not labeled for use on furniture. We do carry products that can be applied to furniture surfaces such as Sterifab and BioDefense. We recommend that you use Ultracide for the indoor treatment as it can be used on all carpeted areas, pet bedding and upholstered furniture. Ultracide Spray contains Permethrin and Phenothrin to kill adult fleas fast. It also contains Methoprene (an insect growth regulator) to prevent reinfestation for up to seven months. Methoprene penetrates deep into the base of carpet and upholstery fibers, where pre-adult fleas live, and targets fleas in the egg and larval stages of development, preventing them from producing new infestations of breeding, biting adults. Be sure to thoroughly vacuum immediately before the treatment and every day for the next 14 days to help speed up flea elimination.

Flea Treatment Article

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July 24, 2015 John from Harrisburg, Pa asked:

QIs NyGuard IGR stronger or more concentrated than Archer IGR?
NyGuard is 10% pyridine and Archer is 1.3% pyridine. Which one is more effective? NyGuard comes in 140 ML and Archer comes in a pint(460 ML), however NyGuard is much more expensive.


Nyguard is sold in a more concentrated form, but you will dilute down to the same usage rate as the Archer if you follow the product label, .01-.03%. You will get the same results when using either product.

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July 22, 2015 Patricia from Saint Louis, Mo asked:

QCan I use Nyguard IGR for thrips?
I have thrips inside of my house. Will this IGR be effective against them? I was hoping to mix it with Bifen IT.


No, Nyguard IGR is not labeled for thrips. We would recommend just using the Bifen IT around the baseboards, cracks and crevices in the home. See our Thrip Control page for more tips about treating for this pest.

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July 21, 2015 Mark from Royal Oak, Michigan asked:

QCan I mix NyGuard IGR and Tempo SC Ultra for carpet beetles?
I am currently using NyGuard IGR & Tempo SC Ultra to get rid of black and varied carpet beetles. Is this mixture effective together? Also, do I have to spray the larvae, or is the residual enough to affect the larvae if they move into a sprayed area?


NyGuard IGR & Tempo SC Ultra mixed together will kill and sterilize Carpet Beetles. If you can get into the cracks and crevices where the larvae or pupa are, then the products will treat for the larvae and pupa stages. There is residual left and you will need to retreat every 14 days. Also, be sure to continue to vacuum often.

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July 19, 2015 Nancy from Houston, Tx asked:

QCan NyGuard and Gentrol be used at the same time?
Curious if two different IGRs can be used at the same time. Target pest is roaches, various species. I do not intend to mix the two different IGRs together in a single application. I intend to apply separately. I am currently using Gentrol and would like to also use NyGuard one week to one month later. Current program is Gentrol mixed with Bifen to control roaches in a tropical climate.


You could use the Gentrol mixture indoors and the NyGuard mixture outdoors. NyGuard will not break down as easily as Gentrol to UV rays. We also recommend that you bait for the roaches as well. Please see our Roach Control page. 

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July 17, 2015 Jaime from Kyle, Tx asked:

QIs Nyguard IGR concentrate considered a green list product?


Nyguard IGR is not a green product as it is not natural or organic.  There are no IGR's that are considered "green" as they are man made.

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