BOMNIS'S VISION Dogs are human's best friends, the most loyal companions, and close family members. We hope to find a humane, safe and effective way to stop dog barking. When the builtin microphone sensor detects your dog's bark, it emits a burst of harmless spray to distract him from his barking behavior. It helps your dog learn how to stop barking without your participation. Warm tips: 1. Don’t wear the citronella dog collar exceeding 10 hours a day, or it may affect the dog's skin. 2. Our citronella bark collar is NOT intended for use on dogs under 6 months old and less than 8 pounds. 3. If you need to adjust the strap and cut the redundant part of it, heat the end of the strap with a lighter, in case it get a raw edge. 4. For dogs with long furs, trim the furs along the spray path for effective spray range. 5. Make sure the collar is not too tight nor too loose one finger should just fit between the collar belt and your dog’s neck. 6. If you want to test the collar before putting it on the dog, please turne on the collar, blow to the microphone to test the collar (Be careful to spray the citronella into your eyes). 7. It is recommended to fill with gas before each use. If you want to refilling the citronella spray, please hold the refill spray can upright and vigorously and firmly press the nozzle down into the refill port for 15 seconds. 8. Don’t let the dog alone at first several times. Spray warning can distract your dogs’ attention and stop barking. At this time, try to praise them so that they can remember the warning. If your dogs struggle with spray warning, try to guide and comfort them to help them adapt to it for a few times.