How to deal with a bum?

I have a Friend who has spent the last six years living on random people's couches. She does not want to work. Every town she goes to she claims that she can not find a job and has applied everywhere. I know it's a lie and she is just lazy. She claims that she has medical problems when I know for a fact she is perfectly healthy. Again, lazy. When she does visit she always reeks because she is too lazy to take a shower. I am not kidding when I say that she can easily go three weeks without a shower. She has been asked to leave everywhere she stays because of her Hygiene and her ungratefulness. She smarts off constantly ad has never left the High School mentality. One woman let her move in and gave her a job at her day care and because of Her laziness the police found a two year old (who had been in her care) wandering the street. But, of course she always lies to try to get herself out of trouble. I hope for the best for her but I will not let her live with me. I tries to get her a job and she got me fired! I am an adult, I have a family. I do not want her here. I have tried to help her get her life together but I am not her mother. She does not care about screwing people over. When she tried to sneak move in with me years ago she showed my husband her bare butt! I feel like I have to keep in touch because we have share nearly our entire lives but I have no intentions of helping her in any way. I have told her point blank you are turning into a loser. She is smart, but is totally wasting herself. What should I say, I'm tired of her trying to guilt trip me. I have already told her not to ask me for anything else. And, honestly I really think I want to just cut contact. I really hate it when someone of our age tells nothing but lies. It's pathetic. I am looking for a more sensitive approach because I don't have any sympathy toward her. So it's hard for me to be sensitive.