If the housemate situation wasn't working out well, I was going to give him a month's notice to get out.
Be careful with this. I went through it with a friend I let stay with me during my divorce. A 30 day notice was all that was legally required, but if the person doesn't leave and has established residency, you do have to go through full-scale eviction proceedings.
Critical Thinking: The Other National Deficit
"That which can be asserted without evidence can be dismissed without evidence." - Christopher Hitchens