My dogs love these, but they've figured out how to pop the treat out! I'm not sure if the orange one is better, but I'm getting them that one in hopes that it's harder to get the treat out. Besides, I never put in two treats at once in this one anyway (you can put in a treat on each end).
Great toy, but the refills can be expesive. If your dog figures out how to get the disk out quickly, it is definitely not the way to go given the cost of the treats. The product held up well, but will break down if you allow your dog to chew on it directly.