Downtown Pet Supply Citronella Refill Canisters to Control Dog Barking, No Bark, Anti Bark Collar - 3 oz - Three Pack Works with: Downtown Pet Supply, Gentle Spray, Spray Commander, Spray Barrier and Virtual Fence spray products. 3 Pack, 9.0 ounces, Approximately 900+ sprays Safe and Effective for humans and animals, Ozone friendly Satisfaction Guaranteed Brand: Downtown Pet Supply