Contains catnip, which is believed to excite pleasure areas in the brains of some cats, causing them to roll, rub, and purr. Fun fact: not all cats are affected by catnip; sensitivity to it varies, and some cats don't respond to it at all! Supervise during play. Ensure this toy is suitable for your cat's preferences, chewing habits and size. No toy is indestructible – supervise play and store safely. Product will deteriorate with use or when wet, so keep dry. May colour stain if wet. Avoid light colours if damp. Check toys regularly for damage or detached parts which can be a CHOKING HAZARD and seek veterinary attention if material is ingested. Pet use only: Not for children. Indoor use only: Avoid flames. Please note; the balls are only intended for use within the activity centre, discontinue use if product damage occurs. Responsibly sourced paper, excludes packaging. Responsible pet ownership supports pet health and wellbeing - and that's important! Keep packaging for future reference.