Table 2. Summary of Bottle Bioassay Results; KDT-50 and Resistance Ratios for Cx. quinquefasciatus TRI (susceptible) and Muheza strains (resistant).

Insecticide	Dosage	Number tested	% Mortality	95% Confidence Intervals
Lambdacyhalothrin	0.05%	208	97	(95–99)
Permethrin	0.75%	207	100	(100–100)
Bendiocarb	0.10%	200	99	(98–100)
Malathion	5%	200	100	(100–100)

Time taken (minutes) for 50% of mosquitoes to be knocked-down (KDT-50) during exposure in 250 ml glass bottles treated with 10 µg/ml permethrin alone (no synergist) or mixed with synergists PBO, DEF or PBO+DEF (n = 100 for each treatment).