Instruct: Classify a given review into positive or negative sentiment.
Query: Cat toy balls

I was searching for cat balls that had catnip in them. I have been and am still searching for a certain catnip ball and have been unable to find. When I saw these balls I decided to buy and see how my cats liked them. I was disappointed to see they did not have catnip in them. At first my cats were not very interested but since then they have enjoyed rolling them around our hardwood floor and carrying them in their mouths even to play on the bed with them. I realized today that one has broken on the inside but the outside material has not been ripped yet. I am rating 4 stars since my cats love them but not 5 stars since no catnip in them. We have had the balls about 1 1/2 months.