Parasitol Res. 2012 Oct;111(4):1481-90.
Larvicidal activity of Morinda citrifolia L. (Noni) (Family: Rubiaceae) leaf extract against Anopheles stephensi, Culex quinquefasciatus, and Aedes aegypti.
Kovendan K, Murugan K, Shanthakumar SP, Vincent S, Hwang JS.

Various noni leaf extracts were able to effectively kill disease causing mosquitos in the larval state. (original abstract available at https://link.springer.com/article/10.1007%2Fs00436-012-2984-9).