Pets and Pesticides: The Desmonds' story TweetPrintE-mail By Ariel Olson SurowidjojoJillian Olsen 4:30 pm, March 30, 2011 Updated: 11:52 am, April 11, 2011 Forrest and Marilynn Desmond are among pet owners whose animals experienced adverse reactions to pyrethroid-based flea treatments.