Each box of Maxforce Gel contains 4 pre-filled reservoirs ( four 30 gram reservoirs) for use with the masterline bait injector. It may be used as a spot or crack and crevice treatment for the indoor and outdoor control of cockroaches in residential areas and non-food areas of institutional, warehousing and commercial establishments, including warehouses, restaurants,food processing plants, supermarkets, hospitals, nursing homes, motels, hotels, schools, laboratories, computer facilities, sewers, aircraft, buses,boats/ships,trains, pet shops, and zoos. Non-food/non feed areas are ares such as garbage rooms, lavatories, floor drains,(to sewers) entries, and vestibules, offices,locker rooms, machine rooms,boiler rooms,garages, mop closets and storage(after canning or bottling).