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Stephanie from Richmond, Va writes

Is Precor a residual product?

If I spray Precor/Conquer today, and a larvae hatches 5 days from now, will that new adult be affected by the Precor? I assume the residual Conquer will likely kill the flea, but if it lays eggs before it dies, will those eggs hatch?


Yes, both Conquer Insecticide and Precor IGR Concentrate will continue working after they are dry. While we do recommend retreating at 2-week intervals for active flea infestations, Precor can continue working for up to 7 months indoors (provided carpets are not steam-cleaned or shampooed). While Precor may not prevent eggs from hatching at all, it does prevent immature fleas from reaching adulthood.

Answer last updated on: 10/17/2017

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Precor IGR Concentrate

Precor IGR Concentrate

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