Laboratory bioassays indicate that acetamiprid, formulated as Assail ^TM brand 70WP Insecticide is an effective ovicide for tobacco budworm, bollworm, southern armyworm, fall armyworm, cabbage looper, European corn borer, diamondback moth, Colorado potato beetle, Mexican bean beetle and green stink bug. Efficacy is achieved at dose rates well below that required for adult or immature control when applied by direct spray or by contact with residue on treated foliage. For tobacco budworm and bollworm, a substantial drop in efficacy is observed between 0.0125 and
0.00625 lb ai/A. Acetamiprid is effective as an ovicide against eggs of susceptible and pyrethroid-resistant tobacco budworm and Colorado potato beetle. Acetamiprid appears to be more active than other commercially available chloronicotynils tested against tobacco budworm and bollworm.