Results of IQK tests. (A) Examples of individual colour reactions for pads from a poorly sprayed (House 1) and a well sprayed (House 6) house. All nine reactions were pooled to provide an average spray dose (Pool). (B) Table and heat map of Tanna houses sprayed with lambda cyhalothrin. Results for each replicate reaction and the pooled average are displayed for each house. The numbers are the colour chart readings in mg/m2; the intensity of red is a visual indication of spray levels.