Contact repellency of permethrin and deltamethrin against the F1 progenies of An. gambiae s.s., An. arabiensis , and An. funestus s.s. collected in the study area by a simplified contact repellency test modified by Grieco et al. [] using WHO test tubes. Repellency was calculated as the average percentage of mosquitoes in the untreated test tubes. Different alphabetical letters indicate significant differences by means of a Tukey honestly significant difference test.