The Gentrol IGR Concentrate is neither a repellent nor a non-repellent: it is an insect growth regulator. The Gentrol IGR Concentrate 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 IGR will not kill bedbugs or roaches. While you can use it alone we do not recommend you doing so. The bedbugs and roaches that are already mature at the time of the application will continue to mate and reproduce as the growth regulator will not stop this process. The IGR will only stop immature insects from reach sexual maturity and it is not 100% effective on any given generation. Using a growth regulator in conjucntion with an insecticde and a comprehensive elimination program would be recommended. You can learn more about roach and bedbug control by reading our Roach Treatment Guide and our Bedbug Treament Guide.
Gentrol IGR would be an excellent option for use with Advion Roach Bait Gel. Remember that Gentrol IGR is just a growth regulator so it is very important to use an insecticide with this product as well, such as Temprid SC. The insecticide will kill the insects that come in contact with it. The Gentrol IGR will act as a birth control for the roaches. Advion Roach Bait Gel will be used inside of cabinets and drawers where you cannot spray. Be sure not to spray the bait because it will contaminate it and the roaches will not consume it.
Please check out our Roach Guide for tips on how to treat and prevent roaches.