Similarly, if there are creeps in your group, don't you wish they would just leave, and not try to infiltrate another innocent group?

I wish them to do their part to not run into the people they creep on, and allow other people in the group (if any exist) to continue to extract any available value from their participation. And fix them, if that's doable. (This is if all they are doing is creeping. If they are committing assaults or something I wish them to go away, to a corrections facility.)