When we first got our little guy an exercise ball was suggested to us by one of the people at PetSmart. I hadn't been introduced to this site yet and I just went with it. Poor little guys ears got all red and he laid down after a few minutes. I knew this was bad mojo and searched for a cause which led me here. Safe to say he never went in the ball again and we got a nice large exercise space for him to bound around in.
My first two came from Petco and came home with the works-Ball, cedar shavings, plastic igloo, shelves, wheel, Charlie chinchilla food and no hay, you get the picture-I did not know either until after I had them for a month and joined a forum.