Indoor Residual Spraying (IRS) involves coating the internal walls and other surfaces of a house with a residual insecticide. For several months, the insecticide will kill mosquitoes and other insects that encounter these surfaces. IRS thus prevents transmission of infection to other persons.
To be effective for a community, IRS must be applied to a high proportion of households in an area, usually more than 80%. The World Health Organisation’s (WHO) Global Plan for Insecticide Resistance Management (IRM) in Malaria Vectors Global Plan Insecticide Resistance Management (GPIRM) made a clear recommendation to use products with different modes of action in annual rotation. IVCC has been working with experts from around the world to continue to develop and bring to market new and more cost-effective IRS products.