Solutions Pest & Lawn via Amazon offers the Bifen IT Bifenthrin Insectiside 32-oz. Bottle, model no. 737387, for $20.89 with free shipping. That's $17 off list and the lowest total price we could find. This professional-strength insecticide is strong enough to treat a 2,000 to 2,500-sq. foot home after diluting with water.

Of note, this item cannot be shipped to the following states: MA, NY, CT, SC, VT, HI, and AK.