Keywords: toxicity stream pyrethroids Substances: Bifenthrin (OXCDWLBJSLVWHB-LKRLXIKPSA-N) Permethrin (RLLPVAHGXHCWKJ-UHFFFAOYSA-N) Acrinathrin (YLFSVIMMRPNPFK-WEQBUNFVSA-N) Empenthrin (YUGWDVYLFSETPE-JLHYYAGUSA-N)