These are more difficult objects as they do not roll easily and are heavy. Notice the cog and wheel style colored ends that make the object more difficult to manipulate on a hard surface.
If your cat is a master forager combine this toy with a large egg. Fill the egg and drop it inside the gear toy to increase the challenge and make your cats work extra hard! Yes, some cats actually get this good at working for food.
You may also put other toys such as plain ping pong balls or a few cat toys inside so that the kibble does not make it’s way to the opening as easily. These ideas are great for cats on a diet plan where we really need to limit their intake or for those with boredom triggered behavior problems as this will occupy them for a longer period of time!