Spray Refills for Spray Bark Collars, Remote Training Collars and Pawz Away Spray Deterrent releases an all-natural unscented spray. The harmless smell and quick action of the spray mist startles and confuses the pet's highly developed sense of smell, causing him to stop unwanted behavior. Available in Scentless and Citronella. Multibranded: PetSafe, Innotek, Multivet