Thad from Clayton, Nc writes
If it needs to be reapplied after 2 weeks, then how long does it stay in the carpet if it is suppose to work for 7 months?
You need to spray the entire carpet for flea control. The IGR does last for 7 months to prevent re-infestation but the eggs that were laid prior to the application will keep hatching because they are not sterile and the reapplication is to kill the newly emerged fleas.
Answer last updated on: 03/18/2013