i_used_to_be_cool

Apparently the grubs I was talking about last week are Japanese Beetle grubs, & I am having a problem with those now. They are eating my raspberries & infesting my yard. Annoyingly, they take a few bites out of one raspberry & move on to the next systematically ruining all of them... grrrr! Apparently this "Milky Spore" stuff kills the grubs (therefore ridding me of future beetles) for up to 10 years, is safe for pets, people, plants, the environment, and even other insects. It is a host-specific bacteria that only kills the JB grubs. Has anyone used this, heard of this, know anyone that used this? Does it work? Are there ANY cons to using this?