Gizmo is a little over a year and half old and he barks at EVERYTHING! Kids playing outside, people walking there dogs or just people in general walking by the house! It drives DH and I crazy!! We've tried everything to stop his barking, we even have one of those sonic devices----doesn't work. The sonic device only goes off at certain pitches, Gizmo figured that out and changed the pitch of his bark
! The only person he'll stop barking for is Grandma and all she has to say is shhhh!!! and he stops, doesn't work for DH and I though!