Feliway Optimum vs Pawganix CalmGuard

Feliway Optimum is not simply a stronger version of classic Feliway, and CalmGuard is not a copy of either. The three products use pheromone messaging differently, and knowing which message you are actually buying is the part most comparisons skip.

Both products plug into the wall and work on the same broad principle, though the pheromone message differs.

The Pheromone Difference

Cats naturally deposit pheromones as a way of marking their environment as familiar and safe. Synthetic pheromone products copy those signals.

CalmGuard uses the F3 facial pheromone. This is the well established one, the synthetic version of what a cat leaves behind when they rub their cheek against a doorframe or a chair leg, and its role is to signal that a space is known and secure.

Feliway Optimum takes a different approach. Ceva, the company behind Feliway, states that Optimum is built on a new feline pheromone complex discovered through their own research, combining several elements of feline communication rather than reproducing a single pheromone. Ceva describes the result as a message of enhanced serenity, and positions Optimum as covering more signs of stress in more situations than their earlier formulations. Those are Ceva's own characterisations of their product, reported here as such.

At a Glance

	Pawganix CalmGuard	Feliway Optimum
Pheromone	F3 facial pheromone	Proprietary feline pheromone complex
Format	Plug in diffuser	Plug in diffuser
In the starter kit	Diffuser, 3 refills, and a calming collar	Diffuser and refill
Refill cadence	Monthly	Every 30 days
Coverage per diffuser	About 500 to 700 square feet	About 700 square feet
Suitable for	Cats of all ages	Cats of all ages
Manufacturer	Pawganix	Ceva Sante Animale

Pricing on both sides changes with promotions and subscription options, so check each brand's own site for current figures rather than relying on a number in an article.

Which Situations Each Is Built For

The F3 pheromone in CalmGuard is the appropriate signal for general environmental calm: helping a cat settle into a space, supporting them through a change at home, and supporting the kind of everyday stress that shows up as hiding, scratching, or marking. It is a whole home ambient signal rather than a targeted intervention.

Feliway's own guidance positions Optimum broadly as well, covering environmental change, signs such as spraying and scratching, and tension between cats living together. Worth knowing if inter cat conflict is your specific problem: Feliway also sells separate Friends and MultiCat formulations built around a different pheromone type for exactly that situation, and Pawganix does not currently offer an equivalent to those. If cat to cat aggression is the main issue rather than general household stress, that distinction matters more than anything in the table above.

Placement and Replacement

Both products depend on the same physics, so placement rules are broadly similar. A plug in diffuser releases pheromone on a column of warm air, which means it needs clear space above it. Feliway specifies at least four feet of clear space above the socket and advises against multi plug adapters, extension leads, and sockets behind doors or under furniture. The same reasoning applies to any warm air diffuser, CalmGuard included. Place the unit in the room your cat actually spends most of their time in, not the room you spend most of yours in.

On timing, set expectations before you start. With CalmGuard, early signs such as reduced hiding or a lower startle response typically show in the first one to two weeks, more noticeable change around weeks two to three, and the full effect established from week four onward with consistent use. Ceva's own guidance for Optimum recommends a minimum of one month.

This comparison is based on product information published on each brand's official website as of September 2026 and is provided for informational purposes only. Product specifications, kit contents, and pricing change; verify current details directly with each brand before purchasing. Feliway and Optimum are trademarks of Ceva Sante Animale, referenced here for identification only, and this article is not affiliated with or endorsed by Ceva. This is not a claim that either product is more effective than the other. This content is not a substitute for professional veterinary advice.