Answer: Wow! Apricot trees usually live about 20-30 years. Pests generally attack when plants are stressed either for water, nutrients or appropriate light. Since the trees weren't cared for, they were no doubt in a weakened state and prime for attack. If the trees have been seriously infested for 10 years, they may not be salvageable. I suggest you take samples of the borer damage, and the insect itself if you can find it for exact identification (there are many types of borers) to your County Cooperative Extension office in Prescott, 520-445-6590. They can then suggest appropriate treatment. Good luck!
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