Insect Growth Regulators (IGR)

Products that disrupt insect development — preventing molting, feeding, or reproduction. Neem oil (azadirachtin) is the primary organic IGR. Slower but longer-lasting than contact kill.

Key Products

Neem Oil Matrine (Ku Shen)

Advantages

Disrupts lifecycle. Prevents resistance. Longer residual than contact kill.

Limitations

Slow action — days to weeks. Does not provide immediate knockdown.