Take a new approach to behavior support with the Calm Paws calming Disk cat collar attachment. Using a premium blend of essential oils that have soothing effects on your anxious cat, this Disk simply slides onto most standard collars or harnesses so he can breathe in the calming scent. An innovative way to supply constant support day and night, it's especially great during stressful situations to minimize anxious behaviors. You can also use it with the Calm Paws Inflatable collars to help support pets through the recovery phase after surgery, when use of surgical collars is recommended. It even glows in the dark!.