Precor® IGR Concentrate is an important element of Integrated Pest Management (IPM), because it controls the pre-adult fleas that make up 99% of a typical flea population. Only Precor IGR's molecules move to the places pre-adult fleas live, like the base of carpet fibers and 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 develop into adults to produce new infestations of breeding, biting adults. - Effective, long-lasting indoor control of pre-adult fleas - up to seven full months. - Contains the Insect Growth Regulator, (S)-methoprene to stop pre-adult flea development - and future infestations. - Targets the hard-to-reach areas where pre-adult fleas live. - A great tank mixer with Zenprox® EC.