How can I get my daughter's boyfriend out of the house I rent?

My daughter's boyfriend has been staying at the house I rent since March. He was only supposed to be here for a week or two. He has never paid me any money toward food, shelter, etc. They have been arguing a lot and I want him to leave my home. My landlord told him verbally on June 26th that she wants him out of this house because she never gave him permission to be there. What do we need to do to get him out? I don't feel that I should have to keep supporting him. I am a single, widowed woman and cannot afford it.