In 1994 and 1995, fipronil (Regent^®) insecticide was applied in small plot evaluations to determine its effectiveness in controlling cotton fleahoppers. In 1994, under moderate insect pressure, Regent^® at .038 and .05 lb ai/A performed as well as the commercial Curacron standard. There was no apparent rate response. In 1995, under lighter insect pressure, Regent^® at .05 lb ai/A reduced the number of nymphs over both the untreated and the Orthene standard. The Regent^® treatments showed a rate response over the entire trial with the .05 lb ai/A rate outperforming the .038 lb ai/A rate.