Test 2: In Ban Mab Jaroen Village, sites
(3) were randomly selected for treatment with Mortein Shieldtox aerosol and matching sites) were left untreated as controls. Eye flies were almost completely eliminated from the 3 treated sites by the aerosol application, and remained free of flies for 72 hours or longer ( Table 2). During the observation intervals, control sites witnessed some fluctuation in eye fly populations but remained occupied for the entire 72 hour period (mean number 331 to 637 flies per substrate ).