Comfort Zone Multi-Cat Calming Diffuser Refills, 2-Pack for Up to 60 Days

Comfort Zone Multi Cat Calming Diffuser Refills are a fragrance-free, drug-free pheromone refill set designed to support calmer interactions in multi-cat homes, with two refills providing up to 60 days of indoor use.

• Two refills, each lasting up to 30 days — maintain calming support for up to 60 days with monthly replacement.
• For multi-cat households — helps reduce stress-related behaviors including fighting, urine marking, scratching, and hissing.
• Fragrance-free and drug-free pheromone formula — mimics cats’ natural calming pheromones.
• Compatible with Comfort Zone diffusers only — use with a diffuser for indoor coverage in one room.
• Vet recommended and tested to electrical safety standards — supports everyday use at home.

Changes in routine, unfamiliar surroundings, and visitors can unsettle indoor cats, while sharing territory may contribute to tension between cats. These refills are made for homes where cats spend time together and show behaviors commonly associated with stress. Use the diffuser in the room your cats frequent to provide an ongoing calming environment in the area where support is most useful.

What behaviors are these cat pheromone refills designed to help reduce?

Comfort Zone refills are designed to help reduce behaviors associated with cat stress, particularly tension and conflict in multi-cat homes. Their pheromone formula mimics natural calming pheromones that cats instinctively recognize as a signal of a safe, familiar area. Most cats begin to show improved behavior within as little as one week, with continued support through regular use.

Behaviors associated with stress can include urine marking and scratching, as well as swatting, biting, fighting, growling, hissing, spitting, and screaming. Social signs may include non-playful staring, stalking, chasing, or blocking another cat. The refills are intended to help manage these behaviors; they do not promise a specific response from every cat.

• Designed for indoor cats and multi-cat homes.
• Supports a continuous calming environment when used with a diffuser.
• Addresses common stressors such as routine changes, new environments, and visitors.

How long does each refill last, and how should I use it?

Each Comfort Zone refill provides calming support for up to 30 days indoors, and this pack contains two refills. Plug a compatible diffuser upright in an open area, with four feet (1.22 m) of clearance around the unit, and replace the refill monthly to maintain continuous use.

Each diffuser and refill is designed to cover one indoor room, so place the unit where your cats spend the most time. Keep it out from under shelves and away from behind furniture, vents, and windows. These placement directions give the diffuser an open area around it and help you target a frequently used room.

• Two 30-day refills provide up to 60 days of use in total.
• Use the diffuser upright with four feet (1.22 m) of open clearance.
• Replace the refill every 30 days.

Which diffuser works with these refills?

These refills fit Comfort Zone cat calming diffusers only; a cat pheromone diffuser is required for use. Comfort Zone diffusers can be reused for up to 12 months, with monthly refill replacement as part of ongoing use. The formula is both fragrance-free and drug-free, and the product is vet recommended.

Comfort Zone has provided care with cat calming pheromones for over 20 years. The diffuser and refill meet Intertek electrical safety requirements and are certified to UL standards. These are specific credentials for shoppers choosing a pheromone-based option for regular indoor use.

• Compatibility: Comfort Zone diffusers only.
• Reusable diffuser lifespan: up to 12 months.
• Electrical safety: meets Intertek requirements and is certified to UL standards.

This two-refill set suits indoor cat households looking to support calmer interactions, especially where cats share territory or encounter everyday changes. It is intended for use with a Comfort Zone diffuser in one room at a time. Two monthly refills, a drug-free and fragrance-free pheromone formula, and compatibility with reusable Comfort Zone diffusers make it a practical fit for ongoing indoor calming support.