Check the listing for details. Comfort Zone Multi-Cat Diffuser Refills - Cats & Kittens 3 pk -1.62 Oz. Condition: New. Listed at 19.99 USD. Brand new in box! The Comfort Zone Multi-Cat Diffuser Refills in a 3 pack are designed specifically for cats and kittens, providing a drug-free solution for calming and reducing stress. With a unit size of 1.62 fl oz, these refills are perfect for keeping your furry friends relaxed and comfortable in their environment. The product from Comfort Zone, known for its quality and effectiveness in pet products, ensures a peaceful atmosphere for your pets to enjoy.