@clean

The @clean command is used to "clean up" the current 
room. Every object that does not have its home set
to the current room is immediately sent home, except
for currently connected players. Only the owner of the 
room or a wizard can use this command.

You may also do @clean object, to send a specific 
object/player home. This syntax does permit sending
connected players and exits home.

Usage:

@clean
@clean thingy