This report provides insecticide use information on the swine sector of agriculture. All data refer to the on-farm use of active ingredients contained in insecticides applied during the 1999 and 2005 calendar years. Insecticides are applied to swine and swine facilities to control mange/mites, lice, flies, and other pests. Chemical data are provided on a rate per head per application and rate per head per year basis. However, significant variations may be observed due to formulation, application method, and pest condition. Internal use pharmaceutical products are excluded from the report, but dual purpose products that can be applied internally or externally are included. Insecticide use information on chemical applications to swine facilities (excluding rodenticides and termite applications) are also included in the report.