Fig. 4From: Comparative analysis of the Potter Tower and a new Track Sprayer for the application of residual sprays in the laboratoryTarsal contact assay results showing mortality over time post treatment of tiles. Percentage mortality in susceptible Kisumu mosquitoes 24 h after exposure to tiles treated with pirimiphos-methyl IRS in a tarsal contact bioassay at a a quarter or b 100% of the recommended dose using a Track Sprayer or Potter TowerBack to article page