Comfort Zone refills pair with all Comfort Zone cat calming diffusers. Each refill provides up to 30 days of continuous calming benefits. The drug-free formula mimics a cat’s natural pheromones to let them know the area is safe and familiar, which helps reduce unwanted behaviors like scratching and urine marking. When used consistently, most cats showed improved behavior after 1 week. Replace each month for a continuous cat stress relief.

Key Benefits:

• REDUCE & REUSE: Compatible with Comfort Zone diffusers only. Comfort Zone diffusers are reusable for up to 12 months; just replace the refill monthly for a continuous calming effect