Difference in number of positive houses in the top 30% of probabilities of infestation using our approach of map distortion compared to using the true map with no distortion (S = 1). Model fit with true values of S = 1, S = 2.5, and S = 4 when a randomly selected one-third of points were observed. Intercept fixed at β0 = −5. 100 simulated datasets were run at each value. We report number of positive houses in the top 30% of probabilities which were treated as unobserved (ie. no gain for houses that were observed as positive).