Gentrol Point Source® Target Pests Controlled Cockroaches and stored product pests • This is an non-intrusive no odor Insect Growth Regulator (IGR) that can be set out in a discreet, non-spray formulation. • This device contains the Insect Growth Regulator (S)-Hydroprene and is good for 90-day control a) stored product pests. And b) German roaches. Pests need not come in contact with the device to be affected. • These are ideal for food handling establishments and other customer sensitive accounts. • Not necessary to vacate premises when using during treatment.