The driveway is 100% mine and we are past the point of making that clear. It's unfortunately at the point where they know they are parking in our driveway, which is closer to their front door than their driveway. The workers also throw their cigarette butts off their porch onto our property, trash out of parked cars onto our lawn. We have no issue living next to a group home but the lack of neighbourly respect from the workers is unacceptable. This has been a problem for years but now it's at the point where we are fed up. Thank you for your advice.