If your pet's favorite activity is barking, help him concentrate in silence with the PetSafe antigab control collar. When your dog barks, the collar triggers a light spray that prevents your dog from making noisy behavior. This way he will quickly learn to relate their barking to the spray. Your dog will stop barking after the first few days of wearing the collar. The collar contains two replaceable fragrance-free refill vials and citronella, of 35 sprays each (try both to see which works best for your dog). If it has a collar then the PetSafe collar will fit the collar it has if it is up to 1.90 cm wide. The collar is light, water resistant and comfortable, so you can wear it wherever you need it to stay quiet.Characteristics:•When your dog tries to bark, the collar sensor detects sound and vibration in your dog's neck and then safely activates a spray to discourage him.•Contains two replaceable fragrance-free vials of citronella, 35 sprays each•Advanced detector technology helps prevent false alarms•The collar is for dogs over 3.6 kg and neck up to 68 cm•Includes low spray and low battery indicators•Water resistant - Great for dogs who like to play outdoors•Suitable for small to large dogsBattery life: The collar charges quickly within 2 hours using a USB charger (included) and has a battery life of up to 40 hours.Includes:•The antigab collar•USB charging cable•1 Spray Citronella•1 Spray without fragrance•Product ManualYou can see the spare parts without fragrance here and here the spare part with Citronella fragrance.