Replying to Kicking out roomates?

In my house i live with the grunge couple, as i like to call them. We let the grunge come in from the cold. we offered them respect and a place to live. But as i look back i realize the mistake i made.
The grunges live downstairs in a small room cover in trash and clothes. The grunges room ommits a foul odor that can be picked up even by my nose, a a nose broken and at half capacity.Mr. Grunge owns three shirts and one pair of pants. He has no job and no life to speak off . When Mr.Grunge wakes up Mrs. Grunge makes him breakfast and goes to work. Mr. Grunge then sits on the couch for the next 10 hours or so and smokes weed and more weed and then some more weed. He refuses to do anything else, except hate on kids and talk himself up. He has never cleaned and its safe to say he never will.Each one brings something to the table not worth eating. The boy has no life and sits on the couch all day and smokes weed. he refuses to do anything else. he leaves his shit everywhere and never helps with communal chores like dishes or trash cleaning. the girl is a loud mouth bitch who leaves dirty tampons, cue tips, and hair everywhere in the bathroom. her voice is so annoying that there have been times where i had wished to shoot her in the head to stop the pain to my brain. we let the grunge come out of the cold. we offered them a house and our respect. the grunges have abused every right and have shown no respect for us or the house. the girl is the only one on the lease but i want them out now. i live with three other people who all feel the same way. any tips on what i can do?