Alcoholic BIL, sister needs help.

I’m sort of at a loss at what to do because my sister(44) is asking me for advice, I’m a fixer, and I have no idea how to help her.My BIL(45) lost his job and became an alcoholic about 3 years ago. We’ve tried ultimatums, reasoning, “watching him,” etc. nothing has helped and we find bottles in the closet all the time. He almost drowned in the pool on family vacation because he was so drunk. No one can stand to be around him anymore.My sister put him on a plane to his parents a week ago to see if they could help. They’ve basically coddled him this whole time. Only HIS sister seems to recognize the problem and she was kicked out of their house today for being “mean” to him. He’s demanding to come back.She’s had 4 spinal surgeries and doesn’t work. He’s the main income. They have a house and 2 kids, 16 and 13. The 16 year old and him have come to blows. The 13 year old just tries to hide from him. My sister doesn’t know how to kick him out, how to get him help if he refuses to see the problem. We’ve always loved him and this has just been 3 years of hell watching someone destroy themselves and their family.So how can we MAKE him go to rehab? How do we keep him out of the house he pays for? I have absolutely no idea what to do or where to even begin. via /r/relationship_advice https://ift.tt/2SbxsW0