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从９０种杀虫植物中筛选出１％川楝素药饵，对德国小蠊和美洲大蠊有良好的毒效，分别于２１天和１６天后死亡率达８７．６７％和１００％，其它２９种均无毒效。
1% toosendanin baits were screened out from 90 kinds of insecticidal plants and had good toxic effects on German cockroaches and American cockroaches, with mortality rates of 87.67% and 100% after 21 and 16 days, respectively 29 kinds are non-toxic.