Toxicity to pets Pyrethrins are a class of drugs derived from theChrysanthemumflower/plant, while pyrethroids are synthetic derivatives. Pyrethrins and pyrethroids typically come in varying concentrations (from < 1% to up to 55% or more). Higher concentrations can be safely used on dogs; however,...
Pyrethrins and pyrethroids. In : Campbell A., Chapman M. (editors). Handbook of Poisoning in Dogs and Cats. Blackwell Science, Oxford, United Kingdom, p. 42-47.Pyrethrins and pyrethroids. Retrieved July 7, 2008, from Extension Toxicology Network Web site: http://extoxnet.orst.edu/pips/...