My Adult children still live at home. 2 are working nd earning decent money. 1 is unemployed and struggling with an addiction to cannabis. He is causing a lot of problems withhin the family. One of them is refusing to pay board money because the other one is not paying anything and has stolen some money off him to buy cannabis with. Is it unreasonable to insist that the 2 who can pay board do pay. We do tell the other 2 that we are doing what we can to get the other one to kick the habit and if they needed help we would be there for them. We do not have much money in the house and this is causing a real problem