Like literally every other private property dispute the answer is "not this land." I have undeveloped land behind my house. It's still my property. I like having a nice buffer of woods for wildlife that keeps my yard quiet. I too would seek to evict someone living in that space, not the least of which being the fact that once I know they are living there, my choices are either 1) evict them, 2) acknowledge they are living there and quietly allow them to, starting the clock on squatter's rights, or 3) acknowledge they are living there and explicitly allow them to, potentially taking legal responsibility for both their safety and any safety issues they pose to my customers.