




A calming diffuser for cats is a plug-in behavior aid that releases a feline-appeasing analog, not a humidifier. Shop training and behavior aids by species, how many hours a refill lasts, and the room-size note so you buy a cat diffuser instead of a dog collar or a mist machine.
Compare two cat refills with the same hour rating. Humidifiers and essential-oil plugs are a different device even when they sit in an outlet.