For in-store pickup only and with stock varying by ZIP code, Walmart offers the Ortho Home Defense Max 1-Gallon Insect Killer, model no. 0196710, for $6.84. That's essentially tied with our mention from last April and the lowest price we could find by $2 (outside of the deal below). It's designed for interior and exterior use and purports to kill and prevent ants, roaches, spiders, and other pests.

A close price: Home Depot charges $6.97 with in-store pickup.