That happened to us. But it was only one squatter (in my MIL's house that we were getting our renters to vacate so we could sell), and she was a substance abuser. Her social worker told us not to let us in. She changed the locks. The police told us to get off our property. It took 4 months and we lost the best of the selling season, so that was an added expense to be sure.
But underneath these anecdotes about the homeless is a bigger systemic issue. My great-grandfather died in an "asylum" because he just didn't fit into mainstream society--do we go back to that model?
Edited to add: This is what Burllington's partial solution is. Pods that are located on the block between one of my son's house and the other. I haven't asked them lately what they think of it. Sounds like it's kind of working but with problems to iron out.
https://vtdigger.org/2024/02/04/one-...ods-a-success/