Came across this article this morning. Found it interesting. In my daycare, I found that counting to see how fast the kids could pick up worked really great. They loved racing to see who was the fastest. And another thing I would recommend is starting them at a very early age. When the kids in my daycare were older enough to join the others in the " playroom" they were older enough to start learning how to pick up. By the time they were "big kids" all I had to say, "Time to pick up, go wash and eat".