Abstract Five, 6-in pots containing five, 24-in Fushia shoots were heavily infested with the greenhouse whitefly. Each plot was randomly assigned to one of five treatments and the whiteflies were counted on the terminal five leaves of each shoot. Sprays were applied with a compressed air sprayer until the plants dripped. The ambient temperature at the time of the spray was 82°F. Plants were maintained in a greenhouse for 1 week and the number of living whiteflies on the terminal five leaves were recounted.