Just found ds in the garden shed smoking weed..he's 18. He knows my feelings on this as we had a conversation some months ago and I said that although I couldn't stop him doing it he wasn't to do it at home. Tonight he's said he thought I meant not in the house and that the garden and shed was okay.
I told him he's to find somewhere else to live and he thinks I am delusional and unfair.
He's stormed off now presumably to a mates to smoke it there.