Why Shop with Us
Customers also Bought:
Gentrol IGR Concentrate travels deep into wall cavities, cracks and crevices, reaching the stored product pests that other treatments miss. Hydroprene, the active ingredient, prevents stored product pest larvae from progressing to the pupal stage of development, so the larvae die before they become breeding adults and future infestations.
Gentrol Concentrate should never be used to eliminate a roach population by itself.
* Gentrol will not kill roaches...it only prevents them from reproducing.
|Active Ingredient:||(S)-Hydroprene (CAS #65733-18-8) - 9%|
|Target pests:||Roaches, Drain & Fruit Flies, Bedbugs, and Stored Product insects|
|For use in:||Food & Non-Food areas|
|Application:||1 oz. per one gallon of water (Crack & Crevice, Spot, or Fogging)
* Most effective when mixed with a liquid insecticide
* Roaches repeat every 4 months
* Bed Bugs repeat every 2 weeks
* Fruit & Drain Flies repeat every 2 - 4 weeks
* See label for complete application instructions
|Yield:||1 pint (16 oz.) makes 16 gallons of solution|
|NOT FOR SALE TO:||AK|
|Shipping Weight:||0.08 lbs|
How Gentrol IGR Concentrate Works
Gentrol IGR (Insect Growth Regulator) Concentrate travels deep into wall cavities, cracks and crevices, reaching the stored product pests, drain and fruit flies, and fleas, that other treatments miss. Hydroprene, the active ingredient, prevents pest larvae from progressing to the pupal stage of development, so the larvae die before they become breeding adults – and future infestations. Cockroaches and bedbugs exposed to Gentrol will become adults incapable of reproducing.
Stored product pests encounter hydroprene the same way they encounter insecticides – traveling on or rubbing against a treated surface. Gentrol IGR Concentrate spreads out from its point of application, creating a much larger treated surface than conventional insecticides. Gentrol Concentrate should always be diluted with water when applying with a sprayer. Because Gentrol is an insect growth regulator and not an adulticide, it should not be used as the sole protection for target pests.
Roaches, drain flies, fruit flies, bed bugs, stored product pests
PESTS CONTROLLED WITH GENTROL IGR CONCENTRATE: Cockroaches, drain flies, fruit flies, bed bugs, stored product pests (including Indian meal moths, rice moths, tobacco moths, red flour beetles, confused flour beetles, lesser grain borers, merchant grain beetles, sawtooth grain beetles, warehouse beetles, cigarette beetles, and Dermestid beetles)
GENTROL, an Insect Growth Regulator (IGR), is a synthetic juvenile hormone "look-alike" which disrupts the normal growth development of bedbugs and roaches. Bedbugs and roaches exposed to the GENTROL IGR Concentrate will become adults incapable of reproducing, thus ending the cycle of an infestation. Use GENTROL IGR Concentrate in apartment buildings, hospitals, hotels/motels, residential homes, nursing homes, and marine vessels. Because of its broad labeling, Gentrol can be used in many sensitive areas where other sprays cannot. Gentrol is an excellent accompaniment to baiting programs for cockroaches, and it can be tank mixed with insecticides for treating bed bugs, roaches, or other listed pests.
Whether it’s used as a fogging agent or general surface spray, the long-term control of Gentrol IGR Concentrate is ideal for these sites:
- Food Handling Establishments
- Nursing Homes
- Aircraft, Ships, Trains, Trucks
ACTIVE INGREDIENT: S-Hydroprene 9.0%
Gentrol IGR Concentrate Application Instructions
Use Gentrol as a general surface spray, fogging, spot, or crack and crevice application. Mix Gentrol Concentrate with diluent and apply with spray or hand application equipment, such hand-pressurized or power-operated sprayers capable of delivering general surface spray, fogging (space spray/mist), spot, crack and crevice spray applications, or with a paint brush, roller, or similar device.
Mix GENTROL IGR Concentrate with water and apply with spray or hand application equipment, such as hand pressurized or power-operated sprayers capable of delivering spot or crack and crevice spray applications.
For spot and crack and crevice preparations:
Use 1 ounce of GENTROL IGR Concentrate to 1 gallon of water. Partially fill the mixing container with water, add the GENTROL IGR Concentrate, shake or stir, and fill to final volume. Use diluted solution within 48 hours of mixing. Shake or stir before each use.
Spot and Crack and Crevice Applications:
Apply GENTROL IGR Concentrate diluted spray solution using either a pressurized spray system capable of delivering a pinpoint or variable spray pattern or a device capable of coating evenly. Make crack and crevice applications directly to areas such as crevices, baseboards, floors, ceilings, or walls. Make spot treatments to areas such as storage areas, closets, doors, and behind and under furniture and beds. To treat bedbugs, apply to harborage points mentioned above; in addition, under beds, bottom side of box springs (do not treat linens and mattresses), under and behind night stands, to points where carpet and wall meet, cracks in cove base, molding, and other areas where bedbugs harborage.
Gentrol Concentrate may be tank mixed with an adulticide currently registered for use, unless the product label prohibits such use.
Gentrol Concentrate may also be converted to a foam. For best results, use the higher amount of the foaming agent rate range.
Always read the product label completely before use.
Each 1 oz. bottle yields 1 gallon of finished solution. Each 16 oz. bottle yields 16 gallons of finished solution. 1 gallon of finished solution covers 1,500 square feet of surface area.
Standard Application Dilution rates / Mixing Ratios for Gentrol IGR Concentrate
- 1 fl. oz. (30 mL)/gal. of water – surface, spot, or crack and crevice applications
- 1 fl. oz. (30 mL) per 12,000 cubic feet – fogging applications
Gentrol IGR Concentrate is for use in the following areas:
Apartment buildings, bakeries, bottling facilities, breweries, boiler rooms, cafeterias, candy plants, grocery stores, day care centers, hospitals, residential homes, hotel/motels, office buildings, kitchens, laboratories, cereal processing facilities, manufacturing plants, mausoleums, meat and produce canneries, nursing homes, restaurants, schools, locker rooms, stores, taverns, warehouses, as well as various modes of transportation such as aircraft, buses, trucks, trailers, rail cars, and marine vessels; food and non-food areas of food-handling establishments.
Fogging Application: Apply Gentrol Concentrate as a fog or an ultra-low volume (ULV) mist with equipment such as ULV, mechanical misting sprayers, aerosol generators, or thermal foggers to achieve uniform coverage. Apply at a rate of 1 ounce Gentrol per 12,000 cubic feet. Use water or oil as diluent, depending on the type of equipment used. Fogging applications are best for larger facilities including warehouses. Close room or warehouse and shut off all ventilation systems. Apply the product in the air and direct mist toward all areas that may harbor target pests. After treatment, leave the room closed for 30 minutes or longer as recommended by the equipment manufacturer or the labels of other products applied in tank mixing. Do not remain in treated area; ventilate before reentry.
Bed Bugs: Apply to harborage points mentioned above; in addition, under beds, bottom side of box springs (do not treat linens and mattresses), under and behind night stands, to points where carpet and wall meet, cracks in cove base, molding, and other areas where bedbugs harborage. Retreat at 14 days for heavy infestations. Gentrol cannot be used as the sole treatment for bed bugs.
Drain Flies, Fruit Flies: Apply Gentrol to areas of fly breeding. For drains, apply product into and around the downspout and catch basin area. Coat these areas thoroughly as fly larvae develop in the scum buildup on the sides of drain pipes. Repeat applications at 2 to 4 week intervals depending upon the severity of infestation.
Pantry/Cabinets, Small Food Storage Areas: Apply as a surface spray, crack and crevice spray, or spot treatment to pantry and cupboard shelves or other areas where food is stored. Prior to spraying, remove all food containers and foodstuffs. Do not replace food containers or foodstuffs until spray has dried. Do not store food in open containers in treated pantries. Destroy any infested food packages to ensure proper control.
Gentrol IGR Concentrate is not intended for outdoor use because it is not photostable (the product breaks down quickly in direct sunlight).
Gentrol IGR Concentrate Features
- Contains the insect growth regulator (IGR) hydroprene, which disrupts pests’ normal growth pattern.
- The only IGR labeled for use as a spot and crack-and-crevice treatment in all areas of food handling establishments.
- May be applied as a general fogging agent or general surface spray.
- Long-term control – 120 days.
- Breaks the endless clean-out/reinfestation cycle.
- Also targets cockroaches.
- Easy dilution rate.
- Use diluted solution within 48 hours of mixing. Shake or stir before each use.
- When tank mixing with adulticides, be careful to match coverage areas of finished solutions. (Many insecticides are applied at a rate of 1 gallon of solution per 1,000 sq. ft.)
- Do not apply directly to food or food-handling surfaces.
- Gentrol is for indoor use only.
- Not for use as the sole protection from listed pests, especially bed bugs and cockroaches.
- Gentrol IGR is also available in a convenient ready-to-use aerosol or the discreet point source stations.
See all 135 reviews »
71 of 76 people found this review helpful:
This product works! Thank Goodness!
By Eve in Cocoa Florida on 05/16/2010
My sons roommate picked up an old sofa-bed for his room. It had bedbugs! My sons house became infected before anyone knew what happened. No one in our family had ANY experience with these horrible creatures! He ordered from your company and was pleased. Then, the little buggers found their way into MY house, probably because while he was treating his house, we kept our granddaughter with us, of course bringing along some clothes and toys! They really got after my husband because he has a very warm body. We ordered your product and are very pleased! We haven't seen any bugs in 3 weeks, I have one more spraying to do. You should spray at least 3 times, 10 days apart. The odor was affordable, the directions good, and best of all, IT WORKS!
57 of 59 people found this review helpful:
By J. in New York, New York & Oklahoma on 05/22/2011
A few years back our Queens, NY apartment became infested with bed bugs. The landlord called an exterminator, who treated our apartment about four times. One of the exterminators (then sent a different one each time) told me that the bug spray mix wasn't really meant to get rid of bed bugs permanently, just put them into temporary hiding. After the four or so treatments, we still had the bedbugs. I decided on this product after reading the literature that was available then. It turned out to work. After one treatment of this, the bed bugs slowed down, and after two they disappeared. I think I did this for a total of three times, and we never saw the bugs again. I had purchased the whole box and had most of it left after treating my apartment three times. Needless to say, the entire box of the Gentrol IGR cost less than a single visit from a NYC exterminator. As an added benefit, Gentrol IGR also fubars roaches. I now use it on my own commercial property for roach control, and for me, it is more effective (by killing the bugs and by cost) than hiring the bug company.
53 of 57 people found this review helpful:
It's just works!
By Kahina in Brooklyn,Ny on 10/22/2010
This stuff works! I'm soooo glad to have found your website and to have found something that actually works immediately. I just moved into an apartment the 1st of this month where it unfortunately had roaches. I couldn't sleep when I noticed the apartment had them; I'd never lived with these ungodly creatures before. I purchased this product along with the Drione and they did the trick! I think my landlord is amazed but he won't let on. He's been paying an exterminator to visit twice a month. This stuff works, the exterminator is a waste of his money. It's been three weeks and I'm more than happy to say that I can rest peacefully.
51 of 52 people found this review helpful:
By Chris in New York City on 07/04/2010
I used this stuff to get rid of bedbugs -- it's the only thing that really worked because it's a genetic disruptor and breaks their life cycle. It had the added bonus of breaking the life cycle of every other insect also -- so I haven't seen a roach or a fly ever since I used it. What an awesome product.
40 of 43 people found this review helpful:
Gentrol IGR Genetic Warfare for Roaches :)
By Tim in Clute, TX on 05/02/2012
I sprayed this down by itself a few days before performing my German Roach Normandy beach mission and I felt like I was on a secret mission to disrupt the worldwide roach population. This Gentrol with MaxForce FC Magnum bait and some Demon WP completely decimated a 20 year German roach problem in South Texas. All three totally killed every bug in the house, haven't seen or heard a peep for over two weeks and for the first time ever, I can say that they are gone with absolute certainty. Still got a spray bottle left in reserve just in case they ever try a counterattack. Thanks for an amazing product and very fast shipping.
By Max in Fort worth on 12/02/2017
It can only work on the young ones. I must have a few oldet ones in the wall. It must have turned them on and made matters worse. I have now used NEEM OIL. It is natural and supposed to confuse them. Right now the residue left from application CYZMIC CS is killing them. I talked to a commercial pest control service tech and he told me temperid sc is best to use. He explained to me the bed bugs are being carried by luggage storage on jet liners.
Works when nothing else will
By Mquirk in Houston, Tx on 11/26/2017
Used traps and sprays and couldn't get ahead of insects. This product does what it should and will recommend it highly
By Tammy in Dayton,KY on 10/18/2017
Ok, I'm not one to do reviews....BUT....something worked!!! I live in the city and the neighbors got evicted AND WERE INFESTED WITH ROACHES!!! The landlord took the kitchen cabinets out of the house and slammed them on the ground and roaches went everywhere!!! Long story short, they got into my house!!!!!!!!!! I was freaking out!! My daughter is allergic to them! I honestly don't know what worked because I used temprid sc, fenvastar ecocap, boric acid, diatomaceous earth, delta dust, and gentrol....one or all of those worked!! It was not over night. It took about a month, but it did work.
By Sue in Conroe Texas on 10/07/2017
Love this stuff! great for big tree roaches! Haven't used in about 2 years and now I'm seeing them again. This stuff takes care of this problem.
1 of 1 people found this review helpful:
Doesn't kill bugs, but is essential to the process
By C in NYC on 09/28/2017
Some reviewers are confused. IGRs are not pesticides. They do not kill bugs directly. Instead, they keep the bugs from maturing properly and reproducing. (Some of those immature bugs will die from their deformities, but that's not the point.) When used in conjunction with other methods, IGRs work quite well. (The other methods vary according to the insect you're targeting, but they include appropriate pesticides, caulking up any cracks in the home, and removing clutter from outside and inside.)
1 of 1 people found this review helpful:
roaches and bedbugs
By Nicole in erie pa on 09/15/2017
I got a used rolled up area rug from a friend and next thing I knew I had roaches. Called an exterminating company. They came for six months. They kept they population way down but didn't seem like it would end up being a permanent solution. Found this website and used the Gentrol along with gels and bates and the were gone in a month! Two months ago my daughters friend spent the night and when her mom picked her up she said "oh by the way we have bedbugs" yeah she really said that....six days later I saw what looked like a nymph on my shoulder. I sprayed with IGR mixed with Temprid SC. I saw what I believe was another nymph a couple days later and almost two weeks bites showed up on those spots. I am spraying still 8 weeks later but have seen nothing since. I know there probably weren't many but I'm continuing to spray. This stuff works great. Highly recommend!
1 of 1 people found this review helpful:
By Dorothea in Providence on 09/07/2017
I am very impressed. It works well and is cost effective. Will continue to shop here.
1 of 1 people found this review helpful:
Genteel IGR concentrate
By Deborah in Seguin on 08/17/2017
I have seen a few different looking roaches. Hope it affects everyone of them. Too early to tell
By Sam in 301 E 23rd st, Panama City,FL on 08/16/2017
Very faster service at reasonable price. I have been ordering the pest control product since so many years I NEVER had any problem. one time the liquid leaked out in the mail but they replaced the whole order at the same charge. GENTROL IGR is very good and very effective. Very good product to control the bed bug and other pests. THANK YOU GENTROL IGR!
By S in NC on 08/14/2017
Good product used for drain flies. Prompt delivery. Have ordered several times. Thanks
Have a question about this product?
Ask our product experts...
Ask a Question
QCan Gentrol IGR concentrate be diluted with other insecticides?
AYes, Gentrol IGR concentrate can either be applied by itself in a gallon of water, or you can mix it directly with any other insecticide you happen to be spraying with. The Gentrol IGR comes in 1 ounce vials, which is the exact amount you need to mix with each gallon of water or gallon of other insecticide. 1 ounce or 1 vial of Gentrol IGR per gallon of water.
11/20/2012 Joel from Sunnyside,ny
Qcan I spray gentrol on all the walls and ceilings in my apartment?
I have small kids and am worried once the Gentrol dries if the residual is bad for them if they touch the walls? Also I have pets, what happens if I spray the floors, will the residual affect my dogs?
AYou should apply the Gentrol IGR as directed on the product label, directly into cracks and crevices around door frames, window frames, baseboards and under appliances. There is no need to spray the entire wall, ceiling or floor. All children should be out of the area during the application and they can safely return to the treated as soon as it has dried. The dried residual will not have any effect on people or pets even if they touch it. Also, by applying the product directly to cracks, crevices, voids and other inaccessible areas you will be limiting anyone's exposure to the product.
QIf bed bugs walk over dried Gentrol IGR, does it work? Or does it have to be sprayed on a live bedbug?
Does it work with all roaches? If yes, which ones?
AGentrol IGR does not have to be applied directly to bed bugs or roaches to work. It has a residual that can last up to 4 months, so it can be picked up by bed bugs, roaches, drain flies and pantry pests long after it dries. It will work on all species of roaches.
QCan you mix Gentrol IGR Concentrate with Phantom Insecticide?
AYes. Gentrol can be mixed with most insecticides with no problem.
QCan you mix Gentrol IGR Concentrate with Temprid SC?
AYes. Gentrol can be mixed with most insecticides with no problem.
11/28/2017 Steve from Ruskin , Fl
QWhat mask do I need to use when applying Gentrol IGR Concentrate?
QHow long will the diluted Gentrol IGR last?
I'm infested with German roaches in my clean kitchen.
A Gentrol IGR Concentrate†should be used within 24 hours of mixing and then discarded (triple† rinse sprayer between uses). For more information on treating for roaches, please take a few moments to review our treatment article on How to Get Rid of Roaches for a successful program. We offer effective Roach Control Kits used for application.
Gentrol IGR Concentrate†should be used within 24 hours of mixing and then discarded (triple† rinse sprayer between uses). For more information on treating for roaches, please take a few moments to review our treatment article on How to Get Rid of Roaches for a successful program. We offer effective Roach Control Kits used for application.
11/10/2017 Ken from St Cloud
QShould I use Gentrol Concentrate first for roach control?
When one has German roaches, my understanding is that you apply gentrol and wait 10-14 days to allow the sterilant to halt reproduction before you commence baiting. Baiting before that seems counter intuitive in my mind. You don't want to kill off the carriers before you've exposed the whole colony. Is my logic flawed?
A When dealing with an active infestation of roaches, we recommending using a roach bait gel, a residual insecticide, and an IGR altogether for best results. Each of these products attacks the infestation in different ways, and since roaches reproduce very quickly and require very little food and water to thrive, you want to come at the infestation with everything you have for fastest results. Keep in mind, too, that most of the roaches in a structure are out of site, so the population is much bigger than just what you see.†We recommend taking a few moments to review our Roach Treatment Guide for more tips. We also sell all these products together in our Roach Control Kits. Please let us know if you have further questions.
When dealing with an active infestation of roaches, we recommending using a roach bait gel, a residual insecticide, and an IGR altogether for best results. Each of these products attacks the infestation in different ways, and since roaches reproduce very quickly and require very little food and water to thrive, you want to come at the infestation with everything you have for fastest results. Keep in mind, too, that most of the roaches in a structure are out of site, so the population is much bigger than just what you see.†We recommend taking a few moments to review our Roach Treatment Guide for more tips. We also sell all these products together in our Roach Control Kits. Please let us know if you have further questions.
10/12/2017 Melissa from Syracuse
QIs Gentrol safe for pregnant woman?
My job is spraying tonight and I'm in my 1st trimester of pregnancy. The office is not very ventilated. Is it safe for me to be in the office?
A We do not recommend that the pregnant woman treat or be present during the application, while it is wet and prior to proper ventilation. Once the treated areas are completely dry and properly ventilated†everyone can return to the areas that were treated.
We do not recommend that the pregnant woman treat or be present during the application, while it is wet and prior to proper ventilation. Once the treated areas are completely dry and properly ventilated†everyone can return to the areas that were treated.
08/22/2017 Meg from Sanford
QIf I am using Gentrol IGR and Bedlam, in what order should they be applied?
08/14/2017 Kim from Los Angeles
QCan I mix Gentrol IGR with Demand CS?
07/28/2017 Tim from Sun Valley, California
QIs Gentrol IGR Concentrate harmful to cats?
A Gentrol IGR Concentrate is pet safe if used as directed.† Pets must be kept out of the area during application but can return as soon as the product is dry.†
Gentrol IGR Concentrate is pet safe if used as directed.† Pets must be kept out of the area during application but can return as soon as the product is dry.†
07/12/2017 Johanna from Joshua, Tx
QCan I spray IGR on furniture and beds? And if I get it on my child's toy should I wash or throw it away?
I ordered it from Amazon. It didn't come with instructions on how or where I can use it. I have a 3 year old daughter and a few pets so I would like to keep them safe.
A No, Gentrol IGR cannot be sprayed directly on beds or furniture. This product is used as a crack and crevice treatment. If the product gets on a toy, be sure to wash well with soap and water.†
No, Gentrol IGR cannot be sprayed directly on beds or furniture. This product is used as a crack and crevice treatment. If the product gets on a toy, be sure to wash well with soap and water.†
07/02/2017 Vin from Saint Robert
QCan I mix Gentrol IGR and Precor IGR and Temprid in one tank for single application?
06/30/2017 Nathan from Laporte, Tx
QIf Gentrol IGR gets on the carpet, will it take longer to dry?
A Gentrol IGR should dry in about the same amount of time when applied on different surfaces indoors as long as it is not applied too heavily. You should just spot treat with a narrow or pin stream when applying Gentrol IGR. Most applications should dry within an hour.
Gentrol IGR should dry in about the same amount of time when applied on different surfaces indoors as long as it is not applied too heavily. You should just spot treat with a narrow or pin stream when applying Gentrol IGR. Most applications should dry within an hour.