highly significantP <0.001
Analysis of the pooled data from the 24 days when the odour from three pigs was tested showed that there was a highly significant ( P <0.001) doubling in the catch of females from 2.3 (0.51±0.069) to 4.8 (0.76 0.081) per day whereas there was no significant effect for males, i.e., 2.9 (0.59±0.076) per day with pig odour vs. 2.6 (0.55±0.089) without odour.