Table 2. Captures of primary RVFV mosquito vectors (Ae. mcintoshi and Ae. ochraceus) recorded at different optimal synthetic component doses and a blend in 9 replicate field trials.

Aldehyde treatments	Number caught	IRR (95% CI)	P-values
Blend A	104	1.30 (0.70–2.43)	0.408
Blend B	85	1.06 (0.57–2.00)	0.850
Blend C	96	1.20 (0.64–2.24)	0.567
Blend D	88	1.10 (0.59–2.06)	0.766
Blend E	91	1.14 (0.61–2.13)	0.686
Blend F	258	3.23 (1.76–5.91)	<0.001
2 Heptanal	129	1.61 (0.87–2.99)	0.128
0.5 Octanal	107	1.34 (0.72–2.49)	0.358
0.1 Nonanal	115	1.44 (0.77–2.67)	0.250
0.1 Decanal	109	1.36 (0.73–2.54)	0.328

Incidence rate ratio (IRR) and corresponding 95% confidence interval (CI) and P-values; P-values based on comparison to CO₂ following generalized linear model (GLM) with negative binomial error structure and log link in R 2.11.0 software; number in front of each compound represents the optimal dose of each component evaluated in mg/ml.