You are doing well. Yes. I agree with the Crash and Burn mthod. If they don't crash and burn threy just keep on taking and using.
I have a post somewhere here where I suggest kicking them to the curb. The curb is where they belong I am afraid. They certainly do not belong in our homes, using our space, taking our money and things, and using illegal drugs which can get US PUT IN JAIL!
We need our house to live in (not to simply sleep in). We need our money to pay things like Mortgages, rent, electric, fuel, and food, not to purchase illegal drugs at the expense of everything else.