Feliway Pheromone Diffuser and Refill for Cats is a plug-in device that releases a synthetic version of the feline facial pheromone to help cats feel calm and secure in their environment. Suited to households managing stress behaviours like spraying, scratching, hiding, or conflict between cats.

The diffuser covers approximately 70 square metres and runs continuously for up to 30 days per refill. The pheromone is odourless to humans and doesn't interact with other medications or treatments. The starter kit includes the electric diffuser and one 48ml refill. Effective for situational stress (moves, new pets, vet visits) and ongoing tension in multi-cat homes.

Pheromone diffusers work best as a background support alongside environmental management — they don't replace proper introductions or territory allocation, but they lower the baseline stress that makes those transitions harder. Feliway is the original and most studied option in this category.