Mycotrol O contains Beauveria bassiana, the white muscadine fungus. Just google
mycotrol, and you will find several sources. Unlike milky spore, it is not
specific to Jap beetles, and will kill a wide range of insects including many
beneficials such as lady beetles. Two gallons runs about $400, but one quart
will treat 1-2 acres, so $25 to $50 an acre.
Does anyone out there know if and where green or white
muscardine fungus is available for sale for the control of Japanese
beetles. I here it has been approved and is more affective than milky
spore.