Mean number of H. diminuta cysticercoids established (±s.d.) in T. molitor after exposure to infective eggs (433 ± 4) with different exposure combinations of alpha-cypermethrin [0.0062 µg µL−1 per beetle, (LD20)]. Single insecticide before received insecticide at day 1, double insecticide before received insecticide on day 1 and 4, single insecticide after received insecticide on day 7, double insecticide after received insecticide on day 7 and 10, and the control group was exposed to the insecticide solvent only (acetone). Experimental infection with H. diminuta was conducted on day 7 for all treatment groups. Different letters represent statistically different establishment of cysticercoids between groups (α = 0.05), and number above each bar represent sample size.