Fig. 2From: Indoor residual spraying practices against Triatoma infestans in the Bolivian Chaco: contributing factors to suboptimal insecticide delivery to treated householdsThe association of the alpha-cypermethrin a.i. concentrations on filter paper samples collected from houses post-IRS, quantified by both HPLC and by the IQK™ (n = 27 filter papers from three houses)Back to article page