St. Gabriel Organics 80010-9 Milky Spore Powder, 10-Ounce Treats up to 2500 Square feet and may last up to 20 years Kills the grub stage of the Japanese beetle Does not harm beneficial insects man or animals Does not harm beneficial insects man animals or the environment Made in the USA Milky spores powder is a naturally occurring microscopic bacteria Natural bacteria eats the grub from the inside Does not harm beneficial insects For use in lawns, garden and around the home Milky spore powder is a naturally occurring microscopic bacteria Kills the grub stage of the Japanese beetle Natural bacteria eats the grub from the inside Does not harm beneficial insects For use in lawns, garden and around the home