Insecticide-treated nets (ITNs) are specially designed bed nets that are coated with insecticides to protect against mosquito bites. They are primarily used to prevent the transmission of diseases such as malaria, dengue fever, and chikungunya. ITNs create a barrier that not only keeps mosquitoes away but also kills them upon contact, reducing the risk of disease spread. These nets are an essential tool in public health efforts, especially in tropical and subtropical regions where mosquito-borne diseases are prevalent. Regular use of ITNs can significantly lower the incidence of malaria and improve overall health outcomes in affected communities.