Table 1 Determination of feeding-deterrence dose (50 and 90%) of DEET, picaridin, and Xbu compounds against A. aegypti.

RE90 is the relative efficacy of Xbu Peak#3 derived as a ratio of the dose causing 90% reduction in mosquito feeding of DEET or picaridin to that of Xbu Peak#3.

Compound	Slope ± SE	50% Feeding- deterrence dose (mg/cm²)	95% Fiducial limits	90% Feeding- deterrence dose (mg/cm²)	95% Fiducial limits	RE90
DEET	1.09 ± 0.36	0.012	0.000–0.032	0.178	0.066–6.785	1
Picaridin	1.73 ± 0.35	0.086	0.044–0.156	0.471	0.237–2.003	0.38
Xbu Peak#3	2.08 ± 0.36	0.014	0.010–0.020	0.057	0.035–0.149	8.26