See how one week could improve your kitty's behavior with the Comfort Zone MultiCat Calming Kit Pheromone Diffuser for Cats. This diffuser continuously releases a fragrance-free and drug-free mist that mimics your cat’s natural pheromones. These calming pheromones help signal that the area is safe and familiar, reducing multi-cat conflict and easing tension. It can also help reduce aggressive behaviors between furry friends, including swatting, scratching, biting, fighting, hissing, growling, spitting, screaming, non-playful staring, stalking, chasing, and blocking. After one week, most pet parents saw improved behavior in their furry family member.