Fig. 5

Cumulative mean (± SE) proportion of dead mosquitoes recovered inside the semi-field enclosure over four nights. Adult An. gambiae s.l. were released in the enclosure at 20:15. Mosquitoes found inside huts, or dead in the enclosure, were recovered at 05:00 each morning, over 4 nights. On the final morning all the mosquitoes that could be found were recovered. Huts within the enclosure had either open windows and open tubes at eave height (control), or closed windows and tubes fitted with insecticide-treated inserts (treated). Over 4 nights mean ± SE of 47.1 ± 3.77% of mosquitoes died when exposed to treated huts compared to 5.2 ± 1.25% with control huts. Means are based on 6 replicates of release–recapture per treatment