Petsafe 3-Pack Citronella Refill Cans to Control Barking
The 3 cans of 3 oz. refill each has approximately 300 sprays and is made to be used with Gentle Spray, Spray Commander, Spray Barrier and Virtual Fence spray products. It contains a gas mixture that is 100% safe for people, animals and the environment. 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, used in many medical inhalation products.