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Table 4 Comparison of the effects of various neem-based products and their azadirachtin contents on various mosquito species.

From: Larvicidal effects of a neem (Azadirachta indica) oil formulation on the malaria vector Anopheles gambiae

Product description Azadirachtin content Mosquito species Investigated effects Recorded Potency Larval Sages tested Reference
Neem oil formulation, An emulsified concentrate made from neem seed oil extracts 0.03% azadirachtin content (32% neem oil) An. gambiae Larval mortality, IGR and inhibition of adult emergence LC 50 of 10.68 ppm and EI 50 of 6.44 ppm 3rd and 4th instars larvae and Adults This article
Neem Azal (Neem seed kernel powdered extract) 34% Azadirachtin A and a total limonoids content of 57.6% An. stephensi Effects of blood feeding, oviposition, and oocyst ultrastructure 10–1000 ppm treatments impair feeding, oogenesis and oviposition Adults and oocyst Lucantoni et al 2006
Neem Azal (Neem seed kernel powdered extract) 40% Azadirachtin content Ae. aegypti Larval mortality, molting inhibition Molting inhibition and larval mortality occurred at all instars 2nd, 3rd and 4th instars larvae Boschitz. And Grunewald 1994
Emulsifiable concentrates   Cx. tarsalis Antifeedancy 5 ppm-10 ppm AZ induces antifeedancy Adults Su and Mulla 1998
   Neemix EC 4.5 0.0005%-0.001% Cx. quinquefasciatus     
   Azad EC 4.5 5 ppm-10 ppm      
Azad WP 10: wettable Product Azad EC 4.5: Emulsifiable concentrate 0.001% 10 ppm Cx. tarsalis Ovicidal 0% hatching rate observed with Azad WP 10 and 46.7% hatching rate with Azad EC 4.5 Eggs Su and Mulla 1998
Water based pure neem oil emulsion Not indicated An. stephensi Cx. quinquefasciatus Inhibition of Adult emergence 0.1 ml/l of 5% of the neem oil caused 100% emergence inhibition Imatures (aquatic stages) Batra et al 1998
Water based pure neem oil emulsion Not indicated Ae. aegypti Inhibition of Adult emergence 0.4 ml/l of 5% of the neem oil caused 100% emergence inhibition Imatures (aquatic stages) Batra et al 1998
Pure neem oil made from seed extracts Not indicated Cx. quinquefasciatus Ae. aegypti Larval mortality 0.02–0.1% caused 100% larval mortality 4th instar larvae Sinniah et al 1994
Neem formulation (name in the original paper is in Arabic) 0.6 ppm-1.9 pm 0.00006% – 0.00019% Ochlerotatus japonicus Cx. pipiens pallens Larval mortality and inhibition of adult emergence. LC50 of 0.342 and 0.367 for Ochlerotatus japonicus and Culex pipiens pallens respectively. 1.9 ppm and 0.6 ppm solutions caused 99% and 75% emergence inhibition respectively 4th Instar Larvae Mikami and Yamashita 2004