• Document No. IRG/WP/1559-92 THE INTERNATIONAL RESEARCH GROUP ON WOOD PRESERVATION Working Group lb Biological Problems (Fauna) Laboratory Evaluation of Chlorothalonil Against the Formosan Subterranean Termite by J. Kenneth Grace 1 , Peter E. and Robin T. Yamamoto 1 1 Department of Entomology University of Hawaii Honolulu, Hawaii 96822-2271 USA 2 Institute of Wood Research Michigan Technological University Houghton, Michigan 49931 USA Paper prepared for the 23rd Annual Meeting Harrogate, U.K. 10-15 May 1992 IRG Secretariat Box 5607 S- 114 86 Stockholm Sweden