Strikeback Flea Killing Foggers are the perfect way to achieve an immediate control of fleas. Once activated, an insecticidal fog fills the room and kills the fleas it comes into contact with. One XL fogger is usually required per room, including many large open plan living spaces. Strikeback Flea Killing Foggers can also be used to control many other insect pests such as ants, bed bugs, cockroaches, dust mites, flies, moths and wasps. Strikeback Flea Killing Fogger smoke is light and distributes evenly throughout a room far more effectively than aerosol foggers that project a heavy water based mist that falls quickly onto the floor. Contents: 1x 11g Strikeback Flea Killing Fogger (HSE8597). Directions for use leaflet. Contains: Permethrin 13.25% w/w Always read the label and product information before use and use biocides safely.