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anyone found a treatment for Colorado potato beetles?

Colorado potato beetles (Leptinotarsa decemlineata) are destroying my potato crop every year.  JWA is not working.  I have also sprinkled some diatomaceous earth on the leaves and it seems to slow down the larva but not stop them from feeding.  Has anyone successfully won the battle against a large infestation of Colorado potato beetles with JADAM methods?  Ginkgo is not available to me.  I am in North America.  

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