CULEXON is a broad spectrum Pyrethroid insecticide, used as a residual spray against vector and public health pests like mosquitoes. It gives a rapid knockdown effect, has a residual activity that will last for 6 months, and has repellent properties. Pyrethroids are chemicals that kill insects by disrupting an insect's nervous system causing a weakened state followed by death. CULEXON is sure to keep you and your surroundings pest free and safe from diseases.