Fig. 6From: Indoor residual spraying practices against Triatoma infestans in the Bolivian Chaco: contributing factors to suboptimal insecticide delivery to treated householdsThe association between the concentration of alpha-cypermethrin a.i. on 8–9 filter papers collected from IRS-treated houses, and a.i. concentrations in the independently prepared spray tank solution used to treat each of the houses (n = 21)Back to article page