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Shug from Ny writes

Can I use Gentrol inside a French drain for flies?


Apply Gentrol IGR to areas of fly breeding as directed only. For drains, apply into and around the downspout and catch basin area. Coat these areas thoroughly as fly larvae develop in the scum buildup on the side of drain pipes. Repeat applications at 2 to 4 week intervals depending upon the severity of infestation. For more information on treating drain flies, please read our treatment article on How to Get Rid of Drain Flies


Answer last updated on: 01/16/2021

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Gentrol IGR Concentrate

Gentrol IGR Concentrate

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