I'm sick of being a mom to a bunch of wacko's?

I'm a single mom of two kids. My x's brother and I have always been close. He broke his back falling off a roof at work. Since then I moved my kids and got a bigger place to make things more easy for him. His back is well healed now but he still has pain. My problem is, is that he is a slob and say's he can't do anything not even carry milk home from the store!!! He won't do dishes although he eats like a pig 5-8 times a day!! I told him to buy himself plastic plates!! I have become a slave to this household and I hate it. I've done all the talking possible and I would move on but I can't afford to move and I just want to dissapear with my kids. I have been to nice I belive and harshly taken advantage of. of course I can't explain it all in here but if anyone has some adivce that would be great..thanks