Peach twig borer

Ok so for the last 2 years I have had bad attacks of what someone here or on Gardenweb told me was peach twig borer. Googled some images of the damages and Im sure thats what im dealing with. I have already done a spay of oil and copper. Although I dont think that is the answer for this problem. Is spinosad or something else what I need to add to my sprays? if so when? Trees should be start producing this year unless we get a late freeze like normal for us.

thanks
Mike

I haven’t had twig borers but the UC guide is very good and lists many chemical options.

http://www.ipm.ucdavis.edu/PMG/r602300611.html

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