For in-store pickup only, Kmart offers the Spectracide Weed & Grass Killer 128-oz. Bottle for $4.90. That's tied with our mention from last month and at least a buck less than you'd pay at another local retail store, although most merchants are currently charging $9 or more. It kills over 155 types of weeds, including chickweed, plantain, annual bluegrass, dandelions, and clover.