At my apartment complex there are some black caterpillars with stripes that are eating up the [View all]

The leaves off the oak trees. Maintenance man says they are army worms but everything I’ve read on the Internet about army worms and it talks about them eating grass. I hope they don’t kill the trees. But since it’s not my property not much I can do about it. But I just would like to hear somebody else’s experience, strength, and hope about these things. Will the trees survive? What could a person do about the caterpillars if it was their own property?