The KAiF Handheld Dog Repellant and Anti Barking Control Device is a 3 in 1 device that helps eliminate some unwanted behaviors such as digging, chewing on furniture, and jumping on guests. The device features an electronic dog repellant that emits a high-pitched ultrasonic sound that is inaudible to the human but irritating to dogs. The repellant is also portable and can be used to protect yourself while walking, biking, or jogging.