Feliway Optimum Refill 48 ml — Ceva pheromone diffuser refill for cats

Feliway Optimum Refill 48 ml by Ceva is a liquid pheromone refill intended for use with compatible Feliway diffusers to help reduce stress-related behaviors in cats. The refill contains a synthetic analogue of feline facial pheromones formulated to create a calmer atmosphere in homes, supporting cats during changes such as moving, introduction of new animals, household renovation, or periods of increased tension in single- or multi-cat households.

Advantages

The refill delivers continuous diffusion of synthetic cat pheromones when used in a compatible diffuser, supporting reduced marking, decreased signs of stress, and improved social harmony among cats. Its 48 ml capacity provides extended operation between replacements, and the liquid formulation is designed for simple insertion into the diffuser unit. The product is made by Ceva and designed to integrate with existing Feliway diffuser devices.

Suitable for

• Homes with one or more cats where stress-related behaviors occur
• Situations involving environmental change: moving house, redecorating, or visitors
• Introductions of new cats or other pets to the household
• Periods when a cat exhibits marking, tension, hiding, or reduced social interaction

When it may not be suitable

The Feliway Optimum Refill is not a replacement for veterinary diagnosis or medical treatment. If a cat shows severe or sudden changes in behaviour, signs of pain, aggression that risks injury, or other medical symptoms, a veterinary assessment is required. The refill will not be effective if not used with a compatible Feliway diffuser or if environmental stressors are extreme and unaddressed.

Key specifications

• Volume: 48 ml liquid refill
• Formulation: synthetic feline facial pheromone analogue in a liquid carrier
• Intended use: indoor pheromone diffusion with compatible diffuser units
• Typical application: continuous passive diffusion to support behavioural management

How to use

Insert the 48 ml refill into a compatible Feliway diffuser according to the diffuser manufacturer’s instructions, plug the diffuser into an electrical outlet in the room where the cat spends time, and ensure unobstructed airflow around the device. Replace the refill when empty and follow any safety instructions provided by the diffuser device and the product packaging. For best results, use continuously during periods of stress or for several weeks after the stressor has ended to help stabilize the environment.

What to consider before purchase

• Requires a compatible Feliway diffuser to operate
• Not a veterinary treatment; consult a veterinarian for medical or severe behavioural issues
• Effectiveness depends on correct placement and continuous use
• May be used alongside behavioural modification and environmental management strategies

Usage recommendations

Place the diffuser in the room where the cat spends most time, avoiding direct drafts and areas behind furniture. For multi-room coverage, use additional diffusers or move the device between rooms as needed. Combine with environmental enrichment and consistent routines to support long-term behavioural improvements.