INSECT GROWTH REGULATORS (IGRS)
The active ingredients hydroprene, methoprene, and pyriproxyfen are mimics of insect juvenile hormones. Applied as insecticides, these materials disrupt the processes of insect molting and reproductive development. A broad spectrum is offered and they have long-residual activity, however, they will be slow to exhibit effects and have no knockdown activity. Insect growth regulators need to be used in a preventative or protectant mode in clean situations, or in conjunction with other insecticides if immediate control is needed. Include IGR’s with other insecticides to extend residual activity from a treatment, and for an additional insecticide mode of action to prevent development of resistance.
The active ingredients hydroprene, methoprene, and pyriproxyfen are similar in their mode of action, however chemical characteristics and product registration differences are profound.