Refills for the Pet Remedy plug in diffuser (will not work by themselves)Pet Remedy is a special blend of Valerian and other essential oils (vetivert, basil sweet and sage). The potent de-stress and calming properties of these essential oils are diffused into the surrounding area by the plug-in, helping to reduce stress and anxiety in your pet.A unique treatment of Valerian essential oil, blended with Vetivert, Basil Sweet & SageJust relaxes, but non sedatingIdeal for all pets including dog stress, cat stress, rodents, horses, all other mammals and birds(It will also have equally beneficial effects on humans!)Coverage up to 60m (650sq. ft)Lasts up to 6 weeksRefill packs available