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FELIWAY® MultiCat Diffuser

FELIWAY® 30 Day Starter Kit

FELIWAY® MultiCat helps your cats live under one roof by providing them with a calming effect during social interactions. It is the first and only product clinically proven* to reduce conflict between household cats. After using FELIWAY® MultiCat, 84% of cat owners saw their cats getting along significantly better. Owners saw results in as little as 7 days and a significant reduction in conflict within 21 days. The starter kit last up to 30 days and covers up to 700 sq ft. Use the diffuser for at least of 30 days. FELIWAY® MultiCat is not a drug. It is non-sedating, non-systemic, and has no known contraindications with any other treatment.

FELIWAY® MultiCat works to help decrease tension and conflict between cats. The pheromone in FELIWAY® MultiCat mimics the cat appeasing pheromone which encourages social bonding and comforts and calms cat. 

FELIWAY® Diffuser is Ideal For:

  • Cat Conflicts
  • Introducing Cats

How to Use This Product


Diffusers should be placed where the cat spends the most time. If you are considering this product for a cat peeing outside the box, you can also place the diffuser in the room where the cat is urine spraying most often.


FELIWAY® MultiCat diffuser should be used for at least 30 days. After 7 days of use, owners noticed a decrease in their cats negative interactions.* After 1 month, 84% of cat owners using FELIWAY® MultiCat reported significant improvement in cats getting along *data on file. Depending on the severity of conflict and tension between your cats, you may need to continue using the FELIWAY® MultiCat diffuser longer than 30 days.


When choosing a plug for the FELIWAY® MultiCat diffuser, make sure there is nothing above the outlet that will obstruct the airflow and diffusion of the pheromone. It should not be placed under a cabinet, behind a couch, or near an open window.


Refills will last up to 30 days but some variations may occur depending on air flow and ambient temperature within the room.


One diffuser will cover up to 700 sq ft in an open floor plan. The diffuser will not diffuse pheromone outside of any given room though. Given the size, floor plan, and where your cats spend the most time, you should consider getting more than one diffuser.


Diffuser heads should be replaced every 6 months.


Newly plugged in diffuser units may have a slight odor for the first 24 hours, but it may last up to 72 hours. Pheromone diffusers are made of self-extinguishing plastic and comply with the International Electro-technical commission (IEC), European (EN) and UL required standards.

There are some changes coming to the FELIWAY® MultiCat packaging. 

[click to download]

What's changing?

The FELIWAY® MultiCat packages for Starter kits and refills are changing color.

How's it changing?

The package currently has a pink background. The new packaging will be red.

Why is the package changing?

This will help distinguish between FELIWAY and FELIWAY Multicat. They are two different pheromones and they are used for two very different reasons.

Is anything else changing?

No, the formula remains unchanged.

When is the change happening?

The new packaging will be available once all current packaging is depleted. Veterinary Clinics and retailers will most likely see the red packaging starting in Aug/Sept. Online retailers may have the red packaging sooner.

What do you need to do?

Nothing, continue to use FELIWAY® or FELIWAY® MultiCat as you have been. 



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