Get this Ortho Home Defense Max 1-Gallon Ready-to-Use Perimeter and Indoor Insect Killer for $6.97 at HomeDepot.com with free in-store pickup. Note that the price may vary by zip code, but this is the lowest price we could find by $2. It is designed for interior and exterior use to kill ants, roaches, spiders and other pests, and provides up to 12 months of protection. Sales tax is charged in most states.