Comfort Zone Cat Calming Diffuser Refills, 2-Pack, Fragrance-Free Pheromone Support

Comfort Zone Cat Calming Diffuser Refills are a fragrance-free, drug-free pheromone refill set designed to help reduce common signs of stress in cats, with two refills providing up to 30 days of support each.

• Two refills, each lasting up to 30 days — maintain calming support by replacing the refill monthly.
• Natural pheromone mimic — gives cats a familiar signal that their space is safe and secure.
• Compatible with Comfort Zone cat calming diffusers only — use with a Comfort Zone plug-in diffuser.
• One-room coverage per diffuser and refill — focus support where your cat spends the most time.
• Vet recommended and tested for electrical safety — meets Intertek electrical safety requirements and is certified to UL standards.

Everyday changes can affect a cat’s behavior, including a new environment, visitors, a changed routine, or time spent alone. These refills are made to support a calmer home environment and help with stress-related behaviors such as urine marking and scratching. The pheromone formula is drug-free and has no fragrance, making it an option for ongoing home use without adding a scented formula.

What can these refills help with?

Comfort Zone Cat Calming Diffuser Refills are designed to help reduce common stress signs and encourage calmer behavior. The formula mimics cats’ natural calming pheromones, which cats instinctively recognize as a signal of a familiar, secure space. Most cats may begin showing improved behavior within as little as one week, with continued support through regular use.

• Made for everyday stressors such as unfamiliar visitors and changes in routine.
• May help reduce urine marking, scratching, and other stress-related behaviors.
• Designed for cats experiencing changes in environment or time alone.

How long do the refills last, and what area do they cover?

Each refill provides 24/7 support for up to 30 days, and each diffuser and refill is designed for one room. This lets you direct the calming environment to a space where your cat spends time. Comfort Zone diffusers can be reused for up to 12 months; replacing the refill monthly helps maintain continuous support.

• The pack contains two 30-day refills.
• Use one diffuser and refill to target one room.
• Replace the refill every month as part of regular use.

Which diffuser works with these refills?

These refills work with Comfort Zone cat calming pheromone diffusers, and a plug-in diffuser is required for use. They are compatible with Comfort Zone diffusers only, so they are intended for households already using that diffuser system.

• Refills pair with Comfort Zone cat calming diffuser products.
• The diffuser plugs into an electrical outlet to release the pheromone formula.
• The refill is designed to be replaced while the diffuser itself is reused.

How should I position the diffuser?

Plug the diffuser in upright in an open area, leaving four feet (1.2 m) of clearance around the unit. Keep it away from shelves, furniture, vents, and windows so the diffuser is not placed beneath an obstruction or near airflow.

• Choose an open area in the room you want to target.
• Position the unit upright and leave clearance around it.
• The refill system is designed for easy, mess-free use.

Comfort Zone has provided cat calming pheromone care for over 20 years, and these refills are vet recommended. They suit cat owners looking for fragrance-free, drug-free support for everyday stress-related behaviors, particularly in a room their cat uses regularly. For the intended use, pair a refill with a compatible Comfort Zone plug-in diffuser and replace it monthly.