I spray mine with this.

http://www.ces.purdue.edu/vanderburg...chlordane2.jpg

No beetles.


"Paul E. Lehmann" wrote in message
...
Some have told you not to worry about the riddled leaves but I take
exception to this.
The Beetles feed on the new leaves and tender shoots. THIS is where most
of the photosynthesis is taking place for the grape vine. Grape leaves
have a productive photosynthesis life of 60 to 90 days. After that, the
young leaves take up the work load. You may not realize it, but your vine
is suffering from not having healthy young leaves if you let the beetles
have their way.

I use Seven. If you do, wait at least 7 days before harvesting your
grapes. For me, this is no problem because the beetles are usually gone
around mid August and I do not harvest until late September to mid October
(wine grapes)


"JoeSpareBedroom" wrote in message
...
I guess I've been lucky during 35 years of gardening - this is the first
time I've had to deal with Japanese beetles. They're decimating my grape
vine leaves. I doused them last night with disgusting, fermented
garlic/onion spray that I made last year, which chased them away. Are they
a short-visit pest, or do they tend to move in with their furniture and
extended families once they've found a snack they like?