Gentle Spray Citronella Refill

Premier Gentle Spray Citronella Refill. The citronella refill for the ABS Gentle Spray Citronella Bark Collar, contains a gas mixture that is 100 percent safe for people, animals and the environment. Most of us are familiar with it's pleasant lemony scent. Citronella is an essential oil that is derived from the stem and leaves of lemon grass and has been used in medicine for a thousand years. The propellant gas is the ozone friendly R134a. Used in many medical inhalation products, it is harmless to pets and people