Fipronil is a highly active, broad-spectrum insecticide from the phenyl pyrazole family. It can be used against major lepidopterous and orthopterous pests on a wide range of field and horticultural crops and against coleopterous larvae in soil. It is also employed for cockroach and ant control. Fipronil is used as the active ingredient in flea control products for pets and home roach traps as well as field pest control for corn, golf courses, and commercial turf. Its widespread use makes its specific effects the subject of considerable attention.