Teach both of your dogs all the skills they need to become the most well-mannered pooches in the neighborhood. The PetSafe Remote Spray Trainer Add-A-Dog Collar allows you to train 2 dogs using 1 remote with the PetSafe Remote Spray Trainer. An alternative to static, the collar works within a 300-yard range and uses spray, tone or vibration correction. It comes with two replaceable refill cartridges in unscented and citronella (try both to see which one you like best). Each cartridge contains 35 sprays. The collar fits canine companions 8 pounds and up and is adjustable for neck sizes up to 27 inches. The collar charges quickly within 2 hours using a USB charger (included), has up to a 40-hour battery life and includes low-spray and low-battery LED indicators. It's great for training 2 furry friends around the house or in the yard. Trust PetSafe to help keep your pet healthy, safe and happy.