Friend is renting from us on our property and he's not taking care of himself. What should we do?

He is diabetic with an amputated leg. His daughter wanted him to move where she is. He moved on our property instead and said "my friends will help me". But he isn't even doing the least amount for himself. Hasn't showered, that I know of, since September 22nd. Didn't take his insulin for 2 weeks. Not cooking, no laundry, even messed up the bathroom (didn't make it to the toilet in time) and left the horrible mess for us to clean up. What can we do?