The trap plants gave mixed results. The zucchini, okra and sweet potato used by Grower A were only occasionally found infested by whiteflies and were used sparingly. Figure 3 shows the percentage of eggplants and tomatoes found to be infested with whiteflies compared to the poinsettia crop. Eggplant was by far the most attractive of the three and it would appear from the graph, that it shows great promise. The problem however, is that the same trend was seen on these plants as on the poinsettias. Adults were commonly found, but very little reproduction and colonization, which meant that the biocontrols were not able to build up on the trap plants either. However, as a monitoring tool and a release point for biocontrols they were very useful. Similar observations were made at Grower C.

The tomato trap plants used by Grower B worked very successfully with greenhouse whitefly. There was good establishment on the plants and the Encarsia established well on the whitefly colonies. However, they were ineffective in attracting large populations of silverleaf whitefly. Very few adults were found and no reproduction or establishment.