The WHO says, “Larviciding measures may be effective as the leading method of vector control in urban areas.”

组织称杀幼虫剂措施作为主要传病媒介控制法可能在城市地区才很有效。

Another common method is larviciding in which chemicals or biological larvicides are added to standing water to kill larvae, ” she aid.

另一个常见法是用杀幼虫剂，用化学品或物杀幼虫剂添加到静水中来杀灭幼虫。”

The guidelines add, “In most endemic settings, the appropriate way to use larviciding is as a supplement” to nets and spraying.

指导方针称，“在大多数传染病环境下，适当使用杀幼虫剂法都只能作为蚊帐和喷洒法补充。

Currently, the WHO does not recommend using the larvicides in rural sub-Saharan Africa, unless there are particular circumstances that limit the habitats of mosquito larvae.

组织并未推荐在撒哈拉南部非洲使用杀幼虫剂，除非在能限制蚊子幼虫栖息地特别环境。

The guidelines say, “Larviciding should be considered for malaria control -- with or without other interventions -- only in areas where the breeding sites are few, fixed and findable.”

指导方针称，“不管有没有其他干预法，只有在那些繁殖地很少、固定且容易发现地区，杀幼虫剂才能被视为疟疾控制法。”