NyGuard IGR

$51.20 - $498.00

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4.5 out of 5 stars Rating: 4.5

62 Reviews | 77 Q&A


{ $51.20 { $50.67 { $50.36 { $49.98 $150.51 $148.52 $498.00
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NyGuard IGR bottle (140 ml)

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NyGuard IGR 480 ml bottle (480 ml)

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NyGuard IGR - CASENyGuard IGR - CASE case (10 x 140 mL bottles)

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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.

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   49
4 stars   6
3 stars   2
2 stars   1
1 star   4

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Average Customer Rating
4.5 out of 5 stars (62)

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Most Helpful Customer Reviews
  • 61 of 63 people found this review helpful:

    5 of 5 stars  Sprayed for fleas got prehatched mosquito's
    By Norma in St. Augustine, Florida on 07/10/2012
    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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  • 49 of 51 people found this review helpful:

    5 of 5 stars  I am blown away!
    By John in Baxter, Tennessee on 07/31/2012
    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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  • 42 of 44 people found this review helpful:

    5 of 5 stars  A true KNOCKOUT
    By David on 09/15/2011
    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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  • 38 of 41 people found this review helpful:

    5 of 5 stars  This Product Works!!!!
    By Marianne in Roswell, GA on 06/07/2011

    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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  • 24 of 27 people found this review helpful:

    5 of 5 stars  Excellent product
    By Li in Saint Paul on 05/08/2013

    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
  • 5 of 5 stars  NyGuard IGR
    By M in South Carolina on 09/22/2017

    The off brand flea medicine I bought for my pets did not work and I had a major flea issue in the house. This product took care of it. I did initial spray then about a week later did it again and no more lfea issues

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  • 1 of 1 people found this review helpful:

    2 of 5 stars  Great for fleas, not so great for German roaches
    By Brian in Fredericksburg Texas on 09/02/2017

    Although not any longer, I have been in the pest control industry for 18 years both as an applicator and an owner. I have seen my share of bad infestations of every type of insect Texas has to offer. My neighbor had what I would call a moderate infestation of German Roaches and I used the required dosage of nyguard in my B&G along with Demand (CS), had my neighbor remove everything from his Kitchen, pull the fridge out, and the oven as well bc the kitchen was the main source of the problem. I methodically treated the kitchen area along with all the rest of his home and it has been over 2 months since I first treated it and one month since I treated it a second time and I gotta tell you, I'm not seeing much of a change. I'm going to give this a bit longer to show me some progress, otherwise I just assume attacking them using the max force products I've always used in the past.

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  • 5 of 5 stars  Nyguard
    By Janette in Noxapater Ms on 08/31/2017

    This product has been wonderful on the roach problem I have had in my house. This Mixed with Bifen IT has almost gotten rid of all the bugs. I expect one more spraying next month will get rid of the all. I love it. Thank you DoMyOwn for being here for me!!

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  • 3 of 5 stars  fleas
    By Mike in cressona pa on 08/14/2017

    Two new kittens spread fleas thru the house before we realized it. Been using the Nyguard IGR mixed with Onslaught to spray our carpets once a week. After two applications it knocked them back pretty good. Just did a third application after a flea jumped on me from our basement. Must spray all the areas each time then give the cats a CAP Guard pill. Hopefully the third time is a charm.

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  • 2 of 2 people found this review helpful:

    5 of 5 stars  Nygauard
    By Rex in Jax Fl on 07/18/2017

    I use to work In pest control, if you have to many roaches poison alone works, but takes awhile with Nygaurd it works a lot faster to get them under control.Works great

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  • 1 of 1 people found this review helpful:

    5 of 5 stars  Nyguard works!
    By Carolynn in Johnson City on 07/17/2017

    Have a really bad flea problem - lots of feral animals plus my domesticated ones! Treating pets, house, and yard really has done wonders! Thanks Nyguard!

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  • 0 of 1 people found this review helpful:

    3 of 5 stars  Still trying
    By J in Carrollton ga. on 07/13/2017

    Used with Talstar as directed, knocked fleas down for a week, but now their back with a vengeance.....

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  • 3 of 3 people found this review helpful:

    5 of 5 stars  Excellent Product
    By Shannon in Roseville on 07/05/2017

    Excellent Product with excellent results! Mixed with Fenvastar Eco cap and it ended our flea problem immediately. Easy to use and no odor. Highly recommend!

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  • 3 of 3 people found this review helpful:

    5 of 5 stars  Works Great
    By Timmy in Dickinson, TX on 06/28/2017

    I mix Nyguard with Cyper WSP and it controls all types of insects. I used to see big spiders, water bugs, beetles, ants, and other insects. After first spray, I didn't see any insects for about 2.5 months. Then when I did see an insect. It would be a very small infant size insect. This stuff definitely works and disrupts the life cycle of various insects.

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  • 3 of 3 people found this review helpful:

    5 of 5 stars  Great product
    By Dh in Royse city Trxas on 05/09/2017

    This works!!! We had a flea infestation and along with the permethrin this stuff knocked them out way better than an exterminator!!

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Most Helpful Q&A's

01/21/2013 Stacia from Kailua Kona

QWhat is the mixing ratio for fleas, in a 2 gal. sprayer, Talstar P and Nyguard 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.


If 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.

33 of 35 people found this answer helpful.
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05/02/2013 Jay from Harrisburg Pa

QIs Nyguard better or just more concentrated than Archer IGR? I see they have the same active ingredient.
Which, in your opinion is more a effective IGR?

AArcher Igr and Nyguard Igr are both very effective IGRs. The biggest differences between the two is the ability to hold up to sunlight outdoors. Archer is photostable for 14 days where as the NyGuard is photostable for 4-6 months. NyGuard also has a wider range of pests that are covered by its ability to sterilize and inhibit the reproductive cycles.

28 of 30 people found this answer helpful.
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11/18/2011 Dan from Jupiter, Florida

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.

21 of 22 people found this answer helpful.
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04/03/2011 Kyle

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.

17 of 19 people found this answer helpful.
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01/23/2010 Judy

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.

13 of 14 people found this answer helpful.
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Most Recent Customer Questions

05/24/2017 Debra from Jesup

QCan I use NyGuard IGR outside if I am using Orcon Flea Destroyer?
Just wondering if NyGuard will kill my nematodes or stunt their growth. If they can be used together in what is the correct order? NyGuard first or nematodes?


Per the product manufacturer if used togther the Nyguard IGR would kill the Orcon Flea Destroyer nematodes. If you are using them for an outdoor application, you would want to use the Nyguard IGR and then wait 14 days and then apply the nematodes to the area. For an indoor application the Nyguard IGR has a much longer residual time which is five months, so you would need to either wait that time period or use the nematodes without the Nyguard indoors. 

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04/18/2017 Liza from Diamondhead Ms

QWhich is more effective to treat fleas on a 1/2 acres yard, Nyguard IGR or Nematodes?


NyGuard IGR mixed with Onslaught would be a great flea treatment!

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12/04/2016 Destiny

QDoes NyGuard IGR work on bed bugs?


NyGuard IGR is not labeled for bed bugs.  The Gentrol IGR is the only birth control that has been shown to work on bed bugs, however it is not 100% guaranteed to work every single time in every home.

4 of 4 people found this answer helpful.
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11/14/2016 Char from Waianae Hi

QIs NyGuard IGR safe for my dogs?


NyGuard IGR is safe for pets to be around after it has dried. 

3 of 3 people found this answer helpful.
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11/09/2016 Rachel from Lititz

QCan I use a pump sprayer to apply insecticide like Nyguard IGR to my lawn or does it have to be a hose end sprayer?
I want to spray my lawn for fleas, and I want to use Onslaught and NyGuard. I am wondering how much of each I need in a 2 gallon sprayer. How much do I need to purchase for 1/2 acre property?


Absolutely, a pump sprayer is the recommended way to apply products like Nyguard IGR and other insecticides. It will give you the most uniform application as well. When using a product like Onslaught Insecticide, you would use 1 fl oz per gallon of water, and that gallon of finished solution would cover 1000 sq ft. For the Nyguard IGR, for fleas you would use 3 ml to 8 ml per gallon. 

1 of 1 people found this answer helpful.
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11/04/2016 Kirk from Ca

QWhat are the best adulticides to mix with NyGuard for German cockroaches?


A great option for Gentrol roach control would be Temprid SC mixed with Nyguard IGR. Temprid SC has two active ingredients in it that work together to combat insects. It can be used every 21 days indoors for roaches as needed. The mixing ratio is between 8-16 ml per gallon of water. Also, it is recommended that you use a bait gel, such as Maxforce Magnum, inside of your cabinets and drawers. Be sure not to spray any insecticide on the bait gel, because it will contaminate it and roaches will not consume it. 

Please check out our Roach Guide with tips on how to treat and prevent roaches. 

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10/25/2016 Emily from Big Springs, Ne

QWill vacuuming carpets and furniture lessen the effect of the Nyguard IGR and insecticide?


No, vacuuming would not affect the the residual of Nyguard IGR or any insecticide once it has been applied and dried. Please let us know if we can be of any further assistance. 

4 of 4 people found this answer helpful.
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10/18/2016 Aaron from Garrettsville, Oh

QWill Nyguard IGR work effectively on finished concrete, as in a basement floor or garage?


Yes, Nyguard IGR can be applied to concrete, and will work effectively. Please let us know if we could assist you any further.

2 of 2 people found this answer helpful.
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09/18/2016 Ron from Villa Rica, Ga

QIs it ok to use both NyGuard IGR and Transport GHP at the same time?
I have a roach infestation in a rental. The house has been cleaned out. I have sprayed Demand CS & Suspend Polyzone with limited success. I have recently purchased NYGuard & Transport GHP on a recommendation from a friend. Spray all 4 products? If so, what order? All all at once? Your thoughts would be appreciated.


You can apply an insecticide like Transport GHP and a growth regulator like NyGuard IGR at the same time.  However, you should not mix multiple insecticides as over-applying products can actually cause insects to avoid the treated areas.  You may find it helpful to take a look at our Roach Treatment Guide if you have not already done so. 

3 of 3 people found this answer helpful.
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09/14/2016 Laurie from Whitfield County, Georgia

QHow do I mix and apply NyGuard IGR for flea and roach treatment?
How should I mix Nyguard to treat house (indoor and covered porch area) with flea AND American Cockroach problem? Can it be applied with a regular spray bottle?


NyGuard IGR should be diluted with water and applied with a hand pump sprayer. For both fleas and cockroaches, it is recommend to use an adulticide (insecticide) along with the NyGuard: NyGuard will not kill existing adult insects; it will only affect immature stages. An insecticide like Onslaught Insecticide would be great to use with NyGuard for roaches and fleas. You would use 0.5 to 1.0 fl. oz. of Onslaught with 8 mL of NyGuard IGR per gallon of water and apply as a broadcast spray in areas with fleas, such as carpets. For roaches, treats cracks and crevices where these insects hide or are likely to travel. Please see our Treatment Guides for these pests for more tips and information:

Roach Treatment Guide

Flea Treatment Guide

4 of 4 people found this answer helpful.
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