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在蟑螂活动高峰期,采用敌百虫药糊对佛山市城区密闭式下水道、粪池蟑螂进行灭效试验,每个沙井、粪池用药糊50克,涂药后第1、10、20、30天。沙井蟑螂密度下降率分别为93.36％、99.2％、96.85％、94.52％;粪池蝉螂密度下降率分别为90.08％、97.92％、91.14％、91.84％,试验证明;用药后30天内,敌百虫药糊对密闭式下水道、粪池蟑螂有较好的杀灭作用。60天后密度回升较快。
In the peak of cockroach activity, the trichlorfon drug paste on the city of Foshan closed sewer, septic tank cockroach to kill test, each manhole, septic tank with paste 50 grams, after coating the first 10,20,30 day. The decline rate of density of manhole cockroach was 93.36%, 99.2%, 96.85% and 94.52% respectively. The density reduction rates of the stockhopper were 90.08%, 97.92%, 91.14% and 91.84% respectively. The test proves that within 30 days after treatment, Insect paste on the closed sewer, septic tank cockroaches have a better killing effect. After 60 days the density rose faster.