[Rich Ives]

Don't go looking for trouble.

Call time. Stand there. Watch the responsible authorities remove the spectator from the playing field. Once the field is clear say "Play."

Your authority over spectators ends at the fence. You can't eject them from the park no matter how much you want to.

See 9.01(d) - you may eject a spectator from the "playing field."

See 2.00 definitions of fair and foul territory and you will see that the "playing field" ends at the fence.

See 3.16, including comments, as to how to handle a situation where a spectator interferes, on the playing field, with a ball in play.

See 3.18 - Home club responsible for security. If the "playing field" is not cleared in a reasonable time you may forfeit to the visitors.

NOTE: In LL rules, the league, and not either team, is responsible. You may not forfeit in LL for spectator problems, and you may not hold the "home" (or visitor for that matter) manager responsible. This is because both teams are at home, and "home" really only designates who bats when.