The Johnson's 4fleas Household Spray Extra Guard is a domestic insecticide to kill and protect your home from fleas brought in by your pet, therefore breaking the flea life cycle. It contains an Insect Growth Regulator for extra protection to stop the development and hatching of flea eggs for up to six months. It also kills fleas, larvae and other insects. This spray helps to protect carpets, furnishings and pet bedding for up to several months but is not for use on animals. This extra large 600ml aerosol is sufficient to treat an average sized house.