Etrimfos solution is primarily used as an insecticide in agricultural settings to control a wide range of pests that affect crops. It is effective against insects such as beetles, caterpillars, and aphids, helping to protect plants and improve yield. The solution is often applied through spraying, ensuring thorough coverage of the foliage to maximize its pest-killing efficacy. Additionally, it is used in public health programs to manage insect populations that can spread diseases, particularly in areas where mosquito-borne illnesses are a concern. Its application is carefully regulated to minimize environmental impact and ensure safety for non-target organisms.