Residual Treatments for House Fly Control in Cement Stanchion, Automatic Flush Swine Barns, 1981

House fly populations were monitored in multiple cement stanchion, automatic flush swine barns to assess the residual control of Atroban 25% WP, Ectlban 25% WP, and Rabon 50% WP- Three, 39 x 7.3 m, swine barns located near Madrid at the Iowa State University Bilsland Swine Farm were sprayed with Atroban or Ectiban at a rate of 0.05 liter/m2 (1 gal/750 ft2) or Rabon at 0.08 liter/m2 (1 gal/500 ft2) with a sprayer delivering 40 psi. Treated surface areas were primarily cement inside the barns. An identical, untreated swine barn was used as a control. Two test trials were conducted. Pre-treatment and weekly post-treatment fly population counts were made with 3 white 76 X 127 mm cards and 3 white 25 x 216 nm strips placed at equal intervals inside each barn.