Four commercially available temephos formulations (Abate 4E, Clarke 1% Skeeter Abate [1% SA], Abate 2-BG, and Abate 5-BG) were evaluated against 3rd instars of Aedes taeniorhynchus in laboratory beaker tests and small field test plots. Abate 4E liquid formulation was effective in both the laboratory and plot tests. 1% SA and Abate 5-BG were more effective in the small field test plots than Abate 2-BG.