To calculate the overall star rating and percentage breakdown by star, we don’t use a simple average. Instead, our system considers things like how recent a review is and if the reviewer bought the item on Amazon. It also analyses reviews to verify trustworthiness.
My kitten hasn't really learned to scratch on this yet! Got it a month ago. Sprinkled cat nip on it..When she went to check it out, her claws caught and it started to roll up on her when she tried to lift her paws!