We attended the scent leagues in June and July which is held two Wednesday's per month in the evening. Here's a pic of a Q ribbon. River earned a total of 14.
River has a great time searching for scent, although she usually likes to run around the room then she'll remember she's supposed to check out the objects on the floor. But in the end she usually alerts to the odor by sitting or laying down next to the right object.
But I think she really loves it when other people pet and pay attention to her and she gets to socialize with other dogs. It definitely makes for a late evening but the part I like the most is the result. You get one sleepy puppy.