This room fogger (with IGR) contains permethrin and s-methoprene and is designed to kill fleas and other insects e.g. ants cockroaches earwigs etc. in one complete treatment. It prevents hatching eggs developing into fleas and protects carpets soft furnishings and pet bedding for up to 7 months. It couldn't be easier to use simply place in the chosen room press and leave. 100ml - Treats an area of 35m2.