The invention provides a combined insert killer containing more than one active component; the utility model is innocuous to environment and comprises a molecular type (one) combined pyrethrum ester of 0.001-99 percent (weight). In eight isomers, the invention contains only enantiomorph (one b) of 1R transform S and 1S transform R, mixes with one or a plurality of activator and additive with a content of 100 percent (weight). The invention relates to a compound one b and relevant production method. |