FELIWAY Cat Calming Pheromone Diffuser Refills — 3 Pack Classic, up to 4 weeks per refill

FELIWAY Classic Diffuser Refill (3 pack) releases calming pheromones to help reduce common signs of feline stress like scratching, urine spraying and hiding when used with a FELIWAY plug-in diffuser.

FELIWAY Classic is the original, vet-recommended pheromone refill designed to create a calmer home for cats. Each refill lasts up to 4 weeks and, when paired with a compatible plug-in diffuser (sold separately), disperses comforting pheromone signals that cats recognize. It’s intended as a supportive environmental tool to ease everyday stressors such as changes in routine, moving furniture, or new visitors.

How quickly will I notice changes in my cat’s behavior?

Some cat owners observe differences in stress-related behaviors within a few days, while others see gradual improvements over a couple of weeks. Results can vary with the cat’s temperament and the specific stress trigger.

• Typical onset: a few days to two weeks for visible calming effects.
• Each refill runs up to 4 weeks; keep continuous use for sustained results.
• Best results when diffuser is placed centrally in the main living area.

How do I use the refill and what space does it cover?

Insert a FELIWAY Classic refill into the compatible plug-in diffuser (not included) and plug it into an open wall outlet with vents facing upward. One refill provides continuous release for up to four weeks and covers areas up to 700 square feet, making it suitable for single rooms or shared spaces.

• Use one refill per diffuser at a time for continuous release.
• Coverage: up to 700 sq ft per diffuser, depending on floorplan and airflow.
• Placement: use an open outlet with 4+ ft clearance from furniture and curtains.

Is FELIWAY Classic safe to use around my pets and family?

FELIWAY Classic is non-sedating and formulated to be safe for use around cats, kittens, people and other pets when used as directed. It provides a behavioral support approach rather than medication, so it can be combined with other veterinary recommendations when appropriate.

• Non-sedative: does not alter consciousness or mobility.
• Suitable for multi-pet households when used according to the label.
• Follow package directions and consult your veterinarian for persistent issues.

Will one 3-pack be enough for my home, and how often should I replace refills?

Each refill lasts up to four weeks, so a 3-pack provides approximately three months of continuous coverage for a single diffuser. If you have multiple rooms or need coverage for long periods, consider additional diffusers and refills to maintain consistent pheromone presence.

• One refill = up to 4 weeks continuous use per diffuser.
• A 3-pack covers roughly three months for a single diffuser setup.
• Add extra diffusers for homes with multiple living areas or persistent stressors.

Who is this for: FELIWAY Classic refill 3-pack is for cat guardians seeking a simple, non-pharmaceutical way to reduce everyday stress signs in their cats—such as scratching, urine spraying and hiding—by using pheromone-based calming signals. It suits households looking for vet-recommended environmental support, owners transitioning homes or routines, and multi-cat homes needing shared-space calming. Always follow product instructions and consult your veterinarian for ongoing or severe behavioral issues.