How to get my son some help?

my son will be 18 in May. We have caught him selling drugs. He refuses to stop because the money is too good. He is in detention now but just on a minor violation of probation. He has said when he gets out he will go back to this. I haven't visited him because I am so disgusted by his actions and his intent to continue. I feel like I am abandoning him but his troubles have been escalating for the two years and I don't know what more I can do especially since he brazenly tells me he is going to continue this under my roof! We go before the court in about one week and my plan is to plead to the judge that he order inpatient drug treatment which my son has already refused in the past because he says he is not a drug addict. I am fearful because while he is now not doing drugs (he is subject to random testing), he is selling which is worse. My question is: is there a clinical definition/description of my son's behaviors and what can I do to get him help? Is inpatient even the answer since he is now not using but instead selling? I am sure now that the only reason he isn't using is because of the random testing.

Visit him let him know about your shame also let him know if he continues that he will be out on his own. If you catch him with drugs turn him in.
If he is doing it under your roof you will be subject to lossing your home. Only allow him the Basics Food clothing and shelter. No Ipods or computers and Stereos. Let the judge know he is planning to continue selling drugs. see what the Judge advices on the matter. It's Tuff love yes but it's what's called for. . .
An Ex Drug addict.

Dear tmom579,
If he isn't testing positive for drugs he will not be ordered to rehab. Since he is 18 there is very little you can do. You are right you cannot condone his behaviours and you cannot allow him to live under your roof. You are not abandoning him. I am surprised that the judge would even entertain you as your son is an adult. Inform your son he cannot return home. If he is making so much money then he can afford a place of his own. Tell him you do not condone what he is doing but still love him as your son. Agree to meet him at restaurants etc. for visits so you can stay in contact with him. But by all means do not allow him in your home. Be honest with him and your family why you must do this. Your other family members should be aware of this so they will not allow him into their home either. It's tough when they reach 18 because you have lost your say in his life. But be assured you are doing the right thing and all you can do is pray that he will one day see the light. Until then continue to love him, just not in your home. If he still were living in your home and selling I'd say call the police...but don't put yourself in that spot. Even if he has to go to a shelter till he can gather up all this money he has for a place...so be it...it is your home.
Sue...good luck

honestly I'm 18 myself and I know a couple of people who do sell drugs. I've noticed that the minors that sell drugs didn't really have many consequences at home when they were caught. I'm not downing your household honestly it's just the way most people are brought up which makes them do and think the certain things they do. I couldn't really help you with the problem but I feel it all starts within the house. I also feel he doesnt respect you if he TOLD you he was going to sell drugs in your house when he's released. but of course this is just my opinion, wish you the best