Replace the refill every 30 days and the diffuser unit every 12 months. The products are safe and certified to U.L standards. Use only in properly functioning 120-volt electrical outlets.

Features:

• One refill, 1.62 fl oz
• Comfort Zone diffusers and refills are a veterinarian recommended solution to keeping cats safe, happy and calm.
• Drug-free solution that helps to calm your cat, reduce destructive behaviors and helps your cat feel more comfortable in their environment