The PetSafe Elite Big Dog Spray Bark Control Collar is simple to operate. When your dog barks, a burst of citronella-scented spray is emitted, which dogs find unpleasent. While not harmful, it deters excessive barking.
To refill the collar, make sure the unit is turned off. Hold the refill spray can upright and firmly press the nozzle down into the refill port. Hold for 15 seconds or until unit is full, then remove the can. If spray leaks out, you may need to press harder to complete the seal.