Pet Remedy natural de-stress and calming is suitable for all pets including, dogs, cats, rabbits, rodents, horses, and birds. The clinically proven formula is based on Valerian absolute oil with small inclusions of Vetiver, Basil Sweet, and Clary Sage essential oils. The plug diffuser is easy to use and fast acting. Each refill lasts up to 60 days, delivering a constant, low concentration of the Pet Remedy to help keep your pet calm and relaxed in the home. This pack contains 3 x 60 day refills for use with the Pet Remedy Plug Diffuser.