First I’d wonder how they got through my security gate. I would not let them in. I’m a 5’3" middle-aged woman and I know my limitations, I’m not as young and strong as I used to be. I would talk to them through the door and not open it. If they said they wanted food and water, I might give them something but I would tell them to back up far away from the door before I put anything out there for them. Once they took it, I would ask them to leave.