Meteor IGR Concentrate contains the insect growth regulator, Methoprene which breaks the flea life cycle. Compare to Precor. Meteor IGR lasts about 7 months. As an insect growth regulator, Meteor IGR stops the fleas from reproducing. For complete results, mix with an insecticide such as
D-Fense SC for overall control. If you use Meteor IGR by itself , you will eventually see desired results ,but would take about 6 weeks.