Paul from Abbeville, Ms writes
Bifen IT can be mixed with an insect growth regulator such as Nyguard IGR to break the flea cycle. Nyguard IGR will prevent the young from maturing into reproducing adults, thereby keeping the colony from getting larger while the Bifen works to eliminate. Bifen should be applied every 2 weeks outside for flea treatment and Nyguard once a month.
Answer last updated on: 06/29/2017