Ortho Home Defense Insect Killer for Lawns Granules provides 3-months of protection from bugs for you and your family. It kills insects, including fleas, ticks, spiders and more, outside the home before they can come inside plus it starts creating a bug barrier in just minutes. Satisfaction is guaranteed or your money back. Each bag of Ortho Home Defense Insect Killer for Lawns Granules treats up to 10,000/20,000 sq. ft. Refer to back panel for insects controlled for 3 months.