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Amazon [amazon.com] has 1-Gallon Ortho Home Defense Insect Killer for Indoor & Outdoor Perimeter (Trigger) on sale for $ 7.97. Shipping is free w/ Amazon Prime or on $ 25+.

Product Description from Store:[list][*]Up to 12 month protection (against ants, roaches and spiders indoors on nonporous surfaces)[*]Kills all common listed household bugs (refer to product label for complete list of insects)