Check the listing for details. Zoecon GENTROL IGR Insect Growth Regulator Bedbug Cock Roach Fruit Flies 16oz. Condition: New. Listed at 74.88 USD. Product OverviewGentrol 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.* Use roach baits and roach sprays in conjunction with Gentrol Concentrate. Features and SpecsActive Ingredient(S)-Hydroprene 9%, Other Ingredients 91%Target pestsRoaches, Drain & Fruit Flies, Bedbugs, and Stored Product insectsFor use inFood & Non-Food areasApplication1 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 instructionsYield1 pint (16 oz.) makes 16 gallons of solutionNOT FOR SALE TOAKShipping Weight1.12 lbsManufacturerZoecon (Mfg. Number: 37880)UPC041535378806EPA Registration2724-351