Why not sit them all down, insist that they start pulling their own weight and assign them chores and punish them appropriately when they fail to do those chores?

From what you've said, you've got nothing to lose.

If I were you, I'd make it clear to all of them that they all need to pull their own weight. Then I'd throw anybody out who continues to sit back and let you do all the work.

Including your husband.

Maybe that's why I'm single. (And very happy that way.)