Fig. 6

Percentage mortality of Anopheles funestus s.l. corrected for control mortality 24 h and 72 h after exposure during the experimental hut trials in Elende. The red dot line represents minimal efficacy and the green dot represents the optimal efficacy of the nets. *represents the level of significance (*P < 0.05 and **P < 0.01 and ***P < 0.001). 0w: unwashed nets, 20w: 20 times-washed nets