We heard about the Bergan Turbo Track Cat Toy on The Psychokitty Speaks , and just had to have one...or three. We finally found some for sale on Amazon.com, and since our gotcha days are coming up in the next month, Mommy got three sets for an early gotcha day gift. We used all three sets to make this configuration. We've all sniffed it, but so far Ambrose is the only one who has played with it. We have played with the box a lot though.