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insect growth regulator
An insect growth regulator (IGR) is a substance (chemical) that inhibits the life cycle of an insect. IGRs are typically used to control populations of harmful pests, such as cockroaches or fleas.〔(【引用サイトリンク】 title=Insect Growth Regulators )〕
==Advantages==
Many IGRs are labeled "reduced risk" by the Environmental Protection Agency, meaning that they target juvenile harmful insect populations while causing less detrimental effects to beneficial insects. Unlike classic insecticides, IGRs do not affect an insect's nervous system and are thus more worker-friendly within closed environments.〔(【引用サイトリンク】author=Harris, Su and Waindle, Marianne )〕 IGRs are also more compatible with pest management systems that use biological controls. In addition, while insects can become resistant to insecticides, they are less likely to become resistant to IGRs.〔(【引用サイトリンク】 title=Insect Growth Regulators )〕
抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』
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