MGK 802958 NyGuard IGR Concentrate Insecticide, 4.73oz, Clear Pyriproxifen 10.0% Nyguard Insect Growth Regulator is for use in the home and in food and non-food areas of restauruants, food processing plants, food and non-food warehouses, grocery stores and supermarkets, schools, office buildings, apartments, hotels and motels, hospitals, tobacco plants and warehouses, manufacturing plants, commercial and industrial buildings, transportation equipment, and outside on lawns and building perimeters. Nyguard Insect Growth Regulator by MGK can effectively break the reproductive cycle of the toughest insect pests, including cockroaches, fleas, mosquitoes, ants, and flies. Nyguard inhibits flea reinfestation by fleas for up to 7 months and is also labeled for use in food areas of food-handling establishments.