Not quite sure where to start! So sorry long post. My OH and I bought our first home together last year. His 2 sons, in their 20s, live with us. The eldest has graduated from uni. messed about with a part time job for the last year until OH helped him get a "proper" job. The second son was similarly found a job last year, went off to uni, dropped out due to a broken wrist and hopes to go back next year (2018) having saved some money back with the the firm he worked with last year. Both are doing drugs, no idea what as I know very little about it other than the smell gives me a headache! They don't smoke in the house, just store stuff here, they of course deny it but I have found evidence looking in their rooms (which OH thinks I shouldn't have done).Second son seems sensible about it in that he doesn't let it affect work although can be rude on "come down Tuesday". Eldest son we think has a problem with it added to the fact he lies normally, lies about this (no surprise) and clearly doesn't seem to think he has a problem, perhaps he doesn't? His bedroom is dirty and untidy. He doesn't eat properly unless we cook him a meal, lies about his food in take generally, drinks loads of high energy sugary drinks, and we both think he is underweight, he doesn't seem to be able to stay focused for any length of time, although I would say he has a tendency to be hyper active naturally. OH doesn't know where to start to approach this and I don't either. Can anyone suggest where to start to deal with this please?