The active ingredient in this special roach control product is Gentrol insect growth regulator (IGR) - a biorational insecticide similar to insect growth hormones that occur naturally in roaches. Gentrol is unique in that it controls roach populations by inhibiting reproduction. For faster results, use Maxforce Roach Gel along with the Gentrol. Gentrol is labeled for restaurants, homes, kitchens, nursing homes, hospitals, and lots of other places. Gentrol can also be purchased as Gentrol Point Sources or as one ounce vials. This aerosol can contains 16 oz. and will treat 1,200 square feet.