Erika from Conyers, Ga writes
Flea infestation Outside . How soon After the first initial application should i retreat
If you are using Bifen IT to treat an active flea infestation, you will need to re-treat 14 days after your initial application. It is strongly recommended to also use an insect growth regulator (IGR) such as Archer IGR in addition to the Bifen IT in order to stop the fleas from reproducing. Please take a moment to read over our Flea Control Guide for more information on how to implement a successful eradication program.
Answer last updated on: 03/23/2018