Insect

Effects

Mediterranean fruit fly

Oriental fruit fly

Disrupts growth, toxic

Arrests pupae development, retards growth, toxic to larvae

Face fly

Horn fly

Retards growth, toxic

Repels, retards growth, disrupts growth

Whitefly

Repels, retards growth, inhibits feeding

Housefly

Inhibits feeding, disrupts molting, repels

Sorghum shoot fly

Yellow-fever mosquito

House mosquito

Flea

Inhibits feeding

Kills larvae, disrupts molting

Toxic to larvae

Retards growth, repels, inhibits feeding, disrupts growth, eggs fail to hatch

Head lice

Kills, very sensitive to neem oil—traditional use in Asia

Spotted cucumber beetle

Mexican bean beetle

Retards growth, inhibits feeding

Retards growth, inhibits feeding, disrupts molting

Colorado potato beetle

Eggs fail to hatch, larvae fail to molt with azadirachtin levels as low as .3 ppm, inhibits feeding

Flea beetle

Inhibits feeding

Khapra beetle

Inhibits feeding, disrupts molting, toxic to larvae

Confused flour beetle

Japanese beetle 

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