Precor IGR's molecules move to the places pre-adult fleas live, like the base of carpet fibers and in between furniture cushions - in short, the sources of a flea infestation. Precor IGR targets fleas in the egg and larval stages of development. As a result, pre-adult fleas cannot produce new infestations of breeding, biting adults. PREVENTS ADULT FLEA EMERGENCE FOR 7 MONTHS.

For control of active flea infestations, this product works best when combined with an adulticide such as Demize E.C. which will help to provide quick knockdown of adult fleas.