Milky Spore can be applied anytime the ground is not frozen. Not harmful to people, animals or the environment. Does not harm beneficial insects. Kills the grub stake of the Japanese beetle. Natural bacteria eats the grub from the inside. Safe for use around waterways. Milky Spores don't die, they just multiply and accumulate in the soil lasting for years and the benefits are guaranteed for 10 years. Milky Spore is organic. Just one spore consumed by a grub will multiply into 3 billion new spores when the grub dies.
Requires three applications per year for two years. 20 pound bag treats 7,000 square feet.