This includes: 1 diffusers and 6 refills. (2 of the refills do not include a box as seen in photo.) Boxes are unopened. $100 value for half the price! TheraPet Diffuser is your effortless solution for a more relaxed, happier dog. It diffuses a natural, calming scent—known as pheromones—that only dogs can detect. These pheromones are like comforting messages, assuring your pup, "You're safe and loved." TheraPet helps reduce stress-driven behaviors like barking, peeing, chewing, and scratching, granting your home—and your pup—a sense of tranquility. It's like whispering soothing words to your furry friend, throughout the day, every day!