Journal Article Efficacy of Different-sized Pellets of the Screwworm (Diptera: Calliphoridae) Adult Suppression System (SWASS) During the Wet and Dry Seasons in Mexico Get access James W. Mackley, James W. Mackley Screwworm Research Laboratory, Agricultural Research Service, U.S. Department of Agriculture, Tuxtla Gutiérrez, Chiapas, Mexico Search for other works by this author on: Oxford Academic PubMed Google Scholar Harold E. Brown Harold E. Brown Screwworm Research Laboratory, Agricultural Research Service, U.S. Department of Agriculture, Tuxtla Gutiérrez, Chiapas, Mexico Search for other works by this author on: Oxford Academic PubMed Google Scholar Journal of Economic Entomology, Volume 80, Issue 3, 1 June 1987, Pages 629–635, https://doi.org/10.1093/jee/80.3.629 Published: 01 June 1987 Article history Received: 09 July 1986 Accepted: 21 November 1986 Published: 01 June 1987