Checking the trash

Well one of my grandsons (Nate) discovered something today. He discovered that there are codes inside coke cases and bottle caps and Pepsi cases and caps. So now he has been having us enter the codes on the appropriate web sites so that he can earn points. He has no idea what he is going to be able to do. But hey it gave him something to do on his Spring Break. He was busy pulling the empty soda cartons out of the trash can. What can I say he had fun today (and it was free)