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 to control infestations and improve crop yield. In veterinary medicine, it is a key ingredient in flea and tick treatments for pets, often found in spot-on solutions, sprays, and collars. Additionally, fipronil is used in public health programs to manage insect populations that spread diseases, such as mosquitoes and ants. Its effectiveness in targeting a broad range of pests makes it a valuable tool in pest control across various industries.