My 17 yr old son was on his own for 4 months because he did not want to follow our rules and was hanging with a bad crowd. He had the choice to follow or leave, which he did. He is back now and we have set the rules in place again, no drugs use in or around our home plus anything we find will be disposed of, he needs to attend school, go to work 2-3 days a week, he has a car but we paid half and the ins is in our name, he pays for his own gas and Ins. and do chores around the house. We do not give him everything and has been taught he has to earn for what he wants or certain things..his cell phone, laptop, etc.. We have done everything a tough love parent can do. We do not give him money, are in contact with all his teachers with his schooling and follow through with consequences. We found out he is using/dealing Marijuana. We found pot pipes and bongs in his car so we decide to take the car away and are cancelling the Ins. We smashed all of it and got rid of any other things along with it. I just found pot under his mattress and flushed that down the toilet with him knowing about it. We have done everything to try to get him to understand this is not acceptable. He refuses to do any counseling and by law we really have our hands tied since he has to agree to it before we can help him since he is almost 18. I do not agree at all with him doing or dealing marijuana and feel maybe him leaving again is the only choice if he continues. What should I do or any suggestions?