The key to avoiding rampant destruction from Japanese beetles is to get them at their larvae stage while they’re still under ground, before they begin to emerge as adults in early June. Milky Spore Powder is not a chemical pesticide, but simply spores of beetle grubs that will spread when Japanese beetle grubs are present in the soil. Infected beetle larvae will die and decay releasing billions of new spores into the soil continuing the cycle until no Japanese beetles remain. One application can remain viable in the soil for many years. Milky Spore Powder is resistant to weather conditions and won’t be affected by fertilizers or harm food crops, humans, pets, bees, birds, or other animals.

A 10 oz container will treat 2000 sq. ft. and has no expiration date if kept sealed and dry.