Q.brown caterpillars
I’ve got swarming brown caterpillars eating the leaves off my fruit trees and others. What can I do without using toxic pesticides? Is it too late for my trees?

This is frustrating for any gardener!
These links will help you get things under control.
https://www.gardeningknowhow.com/edible/fruits/apples/pests-affecting-apples.htm
https://www.gardeningknowhow.com/plant-problems/pests/insects/tent-worms-control.htm
https://www.gardeningknowhow.com/edible/fruits/fegen/how-to-control-fruitworms.htm