

🛡️ Take control now—because pests don’t wait!
MGK NyGuard® IGR Concentrate is a powerful insect growth regulator that disrupts the life cycle of over 50 common pests including cockroaches, fleas, ants, flies, and mosquitoes. Its photo-stable formula ensures long-lasting effectiveness indoors and outdoors, while its EPA reduced risk status makes it safe for use in food handling areas. Trusted since 1902, NyGuard offers a scientifically advanced, botanical-inspired solution for comprehensive pest control.




| Best Sellers Rank | #15,864 in Patio, Lawn & Garden ( See Top 100 in Patio, Lawn & Garden ) #73 in Insect & Pest Repellent Spray Concentrates |
| Customer Reviews | 4.6 out of 5 stars 703 Reviews |
E**T
GET THIS STUFF ASAP.
Got pests? Cared for a pregnant stray cat and it never crossed your mind that it could have fleas and you got them in your house so you freaked out and had multiple panic attacks? Then this stuff is for you. I tried everything recommended to irradicate fleas and nothing worked. I was at the end of my rope and was so disgusted and exhausted from fighting them. I shelled out the money for this stuff and applied it just one time, and the fleas were gone. Legitimately gone. I did apply this stuff another time just to be safe, but it probably wasn't necessary. Let me tell you, this stuff is a complete lifesaver. I have so much left over and keep it around just to be safe. Skip everything else and buy this. You'll be glad you did.
C**S
It helps a lot when dealing with acute flea problems.
Some years are worse for fleas in early summer. This year was apocalyptic. I returned the favor with an apocalypse of my own. Periodic treatments with Nyguard (pyriproxifen) and Temprid (beta-cyfluthrin + imidacloprid) eventually got rid of them -- all of them. I wouldn't waste time (or spray) trying to deal with fleas without an IGR co-treatment.
C**E
Great product
This stuff works great.
K**Y
This is my go to product for fleas now!
We had a pretty large flea infestation in our rental home which in turn we brought them home to our regular home on our clothing, so then I needed to treat 2 homes. I was going absolutely crazy! I had never had an encounter with fleas before, so my first instinct was to go and buy flea bombs and set them off in the home, so I did. I went back to the home a few days after I had set the bombs off and the fleas were just as bad. I tried spraying with just an adulticide, Tempo SC, this worked immediately to kill the living fleas, but then they started to hatch again and then the cycle started all over again. So I did some research online and this was recommended along with the adulticide. I used this product mixed with Premetherin and sprayed the homes inside and out. I also vacuumed diligently once a day. Within 2 weeks,there were no sign of fleas, I sprayed this product by itself again after 2 weeks for good measure. It has been 2 months now and we haven't seen any sign of fleas in either home. This will be my go to product if I encounter a flea infestation again, its awesome! We also treated our dog by flea combing 2-3 times a day in a bathtub filled with 1-2 inches of soapy water so that when the fleas fell in the water during combing, they died immediately. Our vet also gave our dog a pill which would kill the fleas and deform any eggs laid by the fleas that would inhibit them from hatching. With all of these steps we were able to get rid of the fleas. Its a lot of time and effort, but it's worth it in the end.
P**3
Won't control fleas i wish it would
Won't control fleas
D**E
Never waste uour money on flea foggers again. Apply this product instead.
After using "flea bombs" repeatedly, we had just about given up on eradicating the flea population in our basement. We couldn't get rid of them on the dogs, and nothing seemed to kill the eggs. My husband set off twice the foggers designed for the space and left for a week. When he came back, the fleas were as bad as ever. Then my husband heard about this product. He tried it. I came back a week later, and the fleas were gone. Finally, it seems the fleas are gone. The flea treatments we were using with the dogs clearly wasn't enough, and vacuuming wasn't sufficient to stay ahead of the fleas either. However, now that we've applied this product to all our carpets, it looks like the flea collars are working. The dogs have stopped scratching and the one that is most allergic to the fleas is regrowing a healthy coat of fur.
J**.
A little pricey. WORTH IT!
This product work very well for us and our flea problem. We have a friend who has a horrible flea problem, he was coming to our house and we started noticing fleas on our pets. We have four dogs and two cats, my whole house is filled with plants and exotic animals and tanks. Bombing just wasn’t an option for us, our pets are treated monthly from the vets office. But we still had a problem two out of our four German shepherds are very allergic to flea bites and were losing hair and generally were just miserable. Nothing worked for us. We tried EVERYTHING! It was getting so expensive. So in my last desperate attempts I bought this. I put in my carpet shampooer and I shampooed my entire house. We put it in a sprayer and sprayed the outside and the perimeter of the house. This little bottle isn’t even half gone yet and my house is free of fleas at last!!! Dogs are growing hair again this stuff is a freaking miracle.
N**S
Great
Great
Trustpilot
3 days ago
5 days ago