I notice I didn't mention what it is for, sorry.
JAPANESE BEETLES.
I guess my fingers were lagging behind my head. Milky Spore is a bacteria, although my niece informed me they're not called bacteria anymore, which creates a disease specific to JB. By creating this milky spore which the beetle larvae eat, the infected larvae eventually die and burst, releasing more bacteria into the soil. As I remember it takes a few years to reach maximum effect. I think I also remember Lee Reich mentioning that it's effectiveness is mixed, depending on your soil and climate. Anyway the JAPANESE BEETLES, which were a real menace, are now simply a nuisance.
