I received this cat toy free to review. I am pretty sure I received a defective toy. My cats absolutely go crazy over catnip. However, they have no interest in these toys at all. I smelled them and there is no catnip smell at all. I rubbed the toy around, which with their other catnip toy will reactivate the catnip, but for these, nothing happened. I received these at a discounted price in exchange for an honest review.The seller also says that these are filled with cotton, they are not. This is a polyester stuffing, as you can see in the video I uploaded.