Fipronil is widely used as an insecticide in agriculture to protect crops from pests such as beetles, cockroaches, and termites. It is applied to soil, seeds, or foliage, effectively controlling infestations and improving crop yields. In veterinary medicine, it is a key ingredient in topical treatments for pets, helping to eliminate fleas, ticks, and mites. Additionally, it is utilized in public health programs to manage insect populations that spread diseases, such as mosquitoes and ants. Its broad-spectrum efficacy makes it a valuable tool in pest management across various fields.