CSI Bifen I/T Insecticide-Bifenthrin Equivalent to Talstar PRO-Quart 737387 Review March 26, 2018 No Comments Bifen IT is a 7.9% bifenthrin insecticide that kills and controls over 75 different pests. It is the most common professional insecticide in use today. Bifenthrin is very safe to use and does not have an odor or leave a visible residue when applied. Tags: Camping & Hiking, CSI, Outdoor Recreation, Personal Care, Sports & Outdoors