It kills insects on contact above and below the ground, including ants, crickets, centipedes, pill bugs, fleas and grubs. Yes, you will need to water your lawn immediately after applying Amdro Quick Kill Lawn Insect Killer granules. EcoLogic Lawn & Yard Insect Killer Granular 10 lb. - Duration: 4:23. DIRECTIONS FOR USE WIIBlETO USE: Lawns, Landscapes (Omamenlal and Flower Gardens) and Around Home Fotlndalions (Pe