Can I do anything to keep my ex from living in his car in front of my house?

My ex-husband of seven years spends his SSDI within ten days of receiving it, then parks his car in front of my house (purchased after divorce) and lives in it. I've asked him his plans none. I've tried to take him to look at affordable housing and he says I'm making him live in the ghetto. I've asked him to leave, told him to leave, told him the neighbors are questioning me. Is there anything I can do? Even when he doesn't get out of his car, my home no longer feels like my sanctuary. I just always know he's out there.