Bioassay data was collected using a bench top cage arena made of two Perspex cages (each 65 × 65 × 75 cm) connected through a rectangular Perspex tube of 65 cm at the top with 5 cm of both ends inserted into each cage. The tube had a square opening (entrance) of 5 × 5 cm fitted with a lid with both ends fitted with fine netting. The rectangular tube was demarcated into three zones; treatment, control and no choice. Fifty Trioza erytreae of same sex were introduced into the entrance and the number of insects were counted in each zone after one hour. Four replicates were done for each treatment set. The treatments were; Experiments 1; 1. Lemongrass vs air 2. Garlic vs air 3. Guava vs air Experiments 2; 4. Lemongrass vs rough lemon 5. Garlic vs rough lemon 6. Guava vs rough lemon Experiments 3; 7. Lemongrass+rough lemon vs rough lemon 8. Garlic+rough lemon vs rough lemon 9. Guava + rough lemon vs rough lemon. Insects counted in no zone were not included in the analysis.