Cannot get rid of Ghosts once added to Household.

In The Sims 3, you could go back to the Neverworld yourself, but in TS4, you can't. You're stuck with them permenatly unless you remove them via Household Management.

Tried killing them with Emotions, they don't work at all.

PLEASE add an option to return yourself (the Ghost Sim you are playing as...) to the Neverworld.

Also, Ghosts should be able to return other spirits to neverworld. Otherwise, if you just have a family of Ghosts, you'll just have Tombstones cluttering the lot...