My aunt keeps coming over to my home.?

I am in no way a mean person yet I do have my limits & I won't use correct grammar so keep that in mind

My aunt moved in 7 years ago when she had her son she never asked my mom or dad it started off as her escaping her husband who is now her ex-husband & she basically lived in our second floor for about a year she said at first she would stay a few days & it never happened she kept inviting people & left my grandmother in charge of her son & her daughter who had down syndrome she also made my uncle & grandmother pay extra for her living there but she never paid a dime to help out she even made them work in a mild attempt at a lunch catering service my uncle funded needless to say my family is to nice & covers for her mistakes while my father one day was fed up since she infested our home with roaches when she first moved in & told her to leave I later found out her ex kept trying to fight my dad at work since she was living there & he had enough now in 2012 after never showing up she

decided to start coming to our home every day & staying till night & my father isn't as healthy as he was so he needs to stay stress free but she got into herbalife & amway guess where the meetings take place... yup our home it is so annoying these people also freeload off our grandmother's food witch my uncle works two jobs for not only that her son now has adhd & he is out of control he can't be left alone but he sneaks to go to our home alone when his mom isn't looking & it's out of control she's here every morning & freeloads now I love the kids & her but it's strange how out of the blue she decides to show up after quite some years of no contact & she doesn't take good care of her kids yet I can't have her here every day & she's trying to live her again & her son keeps trying to go to our home & take everything he wants & he has a condition where he gets into a rage & blanks out at times what he did how do I get her to leave I can deal with once a week but not 24/7