I would get some Diatomaceous earth, food quality, and dissolve it in water, spray it on the fruit trees from first fruit showing to full ripeness. Probably every 3 weeks or so. It will dry and leave what looks like baby powder on the trees. I put it on all my veggies and it seems to kill a lot of any unwanted insect visitors. DE and boric acid, those are my first line of defense from insects.
Under a microscope it looks like broken glass, it cuts and dehydrates insects. I rub it on the back of my cats' necks for fleas. I also put a dab of it in some of their water and mix some in canned cat food used for treats. This is for intestinal bugs. Wouldn't hurt me to ingest some of it either, which I would first, before chemicals should an MD tell me I had some worms inside.